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Meta TitleSchizophrenia: Definition, Causes, Diagnosis, and Treatment
Meta DescriptionLearn what schizophrenia is, including symptoms, causes, diagnosis, and treatment, and how it is manageable with realistic hope for recovery.
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On this page: What Is Schizophrenia? Schizophrenia Symptoms Historical Subtypes Causes and Risk Factors Diagnosing Schizophrenia Schizophrenia Treatment Looking Ahead With Hope Schizophrenia is one of the most misunderstood mental health conditions , often shaped by fear, stigma, and misinformation. In reality, it is a treatable illness. With appropriate care and sustained support, many people living with schizophrenia can manage symptoms, regain stability, and lead meaningful, fulfilling lives. What Is Schizophrenia? Schizophrenia is a complex and chronic mental health condition that affects how people perceive reality, regulate emotions, think, and relate to others. It affects approximately one percent of the global population and most commonly emerges in late adolescence or early adulthood [1] . Despite persistent misconceptions, schizophrenia is not the same as having a split personality . Instead, it involves periods in which a person’s perception of reality becomes distorted through symptoms such as hallucinations, delusions, or disorganized thinking. These experiences can be intense, but they are not always constant. Many individuals experience periods of remission during which symptoms lessen or temporarily subside. The severity and pattern of symptoms vary widely from person to person. Importantly, schizophrenia is not defined solely by symptoms. Many people living with the condition demonstrate resilience, creativity, and emotional insight. With appropriate care, supportive relationships , and increased self awareness , individuals can achieve stability, rebuild connection, and pursue meaningful and fulfilling lives. Understanding schizophrenia as a treatable medical condition, rather than a personal failing, is essential to reducing stigma and supporting mental health . Schizophrenia Symptoms The symptoms of schizophrenia vary significantly from person to person, but they are commonly grouped into three categories known as positive, negative, and cognitive symptoms [2] . These groupings are descriptive rather than judgmental and help explain how schizophrenia can affect perception, emotion, and thinking in everyday life. Positive symptoms refer to experiences that are added to a person’s usual perception of reality. These symptoms often feel vivid and convincing and can be distressing. Hallucinations involve seeing, hearing, smelling, tasting, or feeling sensations that others do not experience, with hearing voices being the most common example. Delusions are strongly held beliefs that persist despite clear evidence to the contrary, such as beliefs of persecution, grandiosity, or thought broadcasting. Negative symptoms involve a reduction or absence of typical emotional expression, motivation, or behavior. Although they are often less visible than hallucinations or delusions, they can significantly affect daily functioning and quality of life. Common examples include social withdrawal, emotional flatness, reduced motivation, and difficulty initiating or completing everyday tasks. Cognitive symptoms affect how a person processes information, organizes thoughts, and completes mental tasks. These changes can interfere with school, work, and daily routines. Common challenges include disorganized thinking or speech, difficulty focusing or planning, and problems with memory or learning new information. Historical Subtypes of Schizophrenia Historically, schizophrenia was divided into subtypes to reflect differences in symptom presentation. Although the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition no longer uses these subtypes for diagnosis [3] , they remain helpful for understanding the range of experiences associated with the condition. Paranoid schizophrenia was characterized primarily by persistent delusions and hallucinations, often involving themes of fear or persecution. Disorganized schizophrenia involved disorganized speech, behavior, and emotional responses that appeared disconnected from the situation. Residual schizophrenia describes individuals whose active psychotic symptoms had decreased but who continued to experience negative symptoms such as emotional withdrawal or reduced motivation. Catatonic schizophrenia involved significant disturbances in movement or behavior, ranging from immobility to excessive agitation. Undifferentiated schizophrenia applied when symptoms were present but did not fit clearly into one category. Even as diagnostic practices have evolved, these classifications continue to offer helpful context for understanding the different ways schizophrenia can present. Causes and Risk Factors The exact cause of schizophrenia is not fully understood, but research indicates that it develops through a complex interaction of genetic, biological, and environmental factors [4] . Understanding these influences reinforces that schizophrenia does not result from a single event, decision, or personal weakness. Genetics play a role in vulnerability to schizophrenia. Individuals with a close family member who has the condition are at increased risk, although genetics alone do not determine whether schizophrenia will develop. Age is also an important factor , as symptoms most commonly emerge between the ages of sixteen and thirty, with males often experiencing earlier onset than females. Biological research has identified differences in brain structure and function among people with schizophrenia, particularly in systems involving neurotransmitters such as dopamine and glutamate [5] . These chemicals are essential for regulating perception, emotion, and thought processes, and disruptions in their activity are believed to contribute significantly to symptom development. Environmental and experiential factors can further increase risk, especially when combined with genetic vulnerability [6] . These factors include substance use during adolescence, exposure to trauma or chronic stress , prenatal or birth complications, and prolonged social stressors such as discrimination, overcrowded living environments, or social isolation [7] . Diagnosing Schizophrenia Accurate diagnosis is essential for effective treatment and long term stability. Schizophrenia cannot be identified through a single medical test. Instead, clinicians rely on comprehensive psychiatric evaluation , behavioral observation, and detailed personal history [8] . According to established diagnostic guidelines, symptoms must be present for a defined period and must significantly interfere with daily functioning. The Diagnostic and Statistical Manual of Mental Disorders Fifth Edition requires symptoms to persist for at least six months, while the International Classification of Diseases Eleventh Revision allows diagnosis after one month of continuous symptoms [9] . Core symptoms considered during diagnosis include hallucinations, delusions, disorganized speech or behavior, and negative symptoms. Diagnosis also involves ruling out medical, neurological, or substance related causes. Clinicians often gather information from family members or caregivers and assess for co occurring conditions such as mood disorders or substance use disorders. Early diagnosis is associated with better treatment response, reduced symptom severity, and improved long term outcomes . Schizophrenia Treatment Effective management of schizophrenia requires a coordinated and long term treatment approach that integrates medication , therapy, and psychosocial support [10] . Although schizophrenia is a chronic condition, treatment can significantly reduce symptoms and improve quality of life. Antipsychotic medications are a central component of treatment. Earlier medications can be effective but are more likely to cause movement related side effects. Newer medications are often preferred due to improved tolerability, though they require careful monitoring for metabolic effects such as weight gain or changes in blood sugar [11] . Ongoing medical supervision helps ensure medications remain safe and effective. Psychotherapy and social support are equally important. Cognitive Behavioral Therapy helps individuals manage distressing thoughts and symptoms. Family therapy improves communication and understanding within the home, while social skills training supports confidence and independence. Participation in education, employment, or community activities further promotes recovery and social connection. Recognizing early warning signs of relapse allows for timely intervention. Daily self-care practices such as regular sleep, physical activity, balanced nutrition, and avoidance of substance use support emotional stability. Mindfulness practices and creative activities can further strengthen resilience and coping skills [12] . Looking Ahead With Hope Schizophrenia is a serious but clinically manageable mental health condition. With early diagnosis, integrated treatment, and informed community support, individuals can achieve stability and lead meaningful lives. Greater understanding of schizophrenia helps reduce stigma, promote empathy, and encourage timely intervention. By recognizing both the challenges of the condition and the realistic hope for recovery , individuals, families, and communities can support dignity, resilience, and long term well being. Be the first to read new articles from Patrick Nagle Join MentalHealth.com for free to get updates References Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). Schizophrenia . In StatPearls. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK539864/ . National Institute of Mental Health. (n.d.). Schizophrenia . https://www.nimh.nih.gov/health/publications/schizophrenia . Regier D.A., Kuhl E.A. & Kupfer D.J. The DSM‑5: Classification and criteria changes. World Psychiatry . https://doi.org/10.1002/wps.20050 . Stilo, S. A., & Murray, R. M. (2019). Non-genetic factors in schizophrenia. Current Psychiatry Reports, 21, Article 100. https://pubmed.ncbi.nlm.nih.gov/31522306/ . Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). Schizophrenia . In StatPearls . StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK539864/ . Wahbeh, M. H., & Avramopoulos, D. (2021). Gene–environment interactions in schizophrenia: A literature review. Genes, 12 (1), 39. https://pubmed.ncbi.nlm.nih.gov/34946799/ . Brandt, L., Liu, S., Heim, C., & Heinz, A. (2022). The effects of social isolation stress and discrimination on mental health. Translational Psychiatry, 12, Article 398. https://doi.org/10.1038/s41398-022-02178-4 . Jablensky, A. (2010). The diagnostic concept of schizophrenia: Its history, evolution, and future prospects. Dialogues in Clinical Neuroscience, 12 (3), 271–287. https://pubmed.ncbi.nlm.nih.gov/20954425/ .  First, Michael B., Gaebel, W., Maj, M., Stein, D. J., Kogan, C. S., Saunders, J. B., Poznyak, V. B., Gureje, O., Lewis-Fernández, R., Maercker, A., Brewin, C. R., Cloitre, M., Claudino, A., Pike, K. M., Baird, G., Skuse, D., Krueger, R. B., Briken, P., et al. (2021). An organization- and category-level comparison of diagnostic requirements for mental disorders in ICD-11 and DSM-5. World Psychiatry , 20(1), 34–51. https://doi.org/10.1002/wps.20825 . Guccione, C., Lanza di Scalea, G., Ambrosecchia, M., Terrone, G., Di Cesare, G., Ducci, G., & Ferri, R. (2021). Early signs of schizophrenia and autonomic nervous system dysregulation: A literature review. Clinical Neuropsychiatry, 18 (6), 291–304. https://pubmed.ncbi.nlm.nih.gov/34908942/ Chien, W. T., Leung, S. F., Yeung, F. K. K., & Wong, W. K. (2013). Current approaches to treatments for schizophrenia spectrum disorders, part II: Psychosocial interventions and patient-focused perspectives in psychiatric care. Neuropsychiatric Disease and Treatment, 9, 1463–1481. https://pubmed.ncbi.nlm.nih.gov/24109184/ Chokhawala, K., & Stevens, L. (2023). Antipsychotic medications . StatPearls Publishing. https://pubmed.ncbi.nlm.nih.gov/30137788/ Medical Content The Clinical Affairs Team at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. For more information, please visit the Editorial Policy . About MentalHealth.com We are a health technology company that guides people toward self-understanding and connection. The platform provides reliable resources, accessible services, and nurturing communities. Its purpose is to educate, support, and empower people in their pursuit of well-being. Medical Review Ph.D. Shivani Kharod, Ph.D. is a medical reviewer with over 10 years of experience in delivering scientifically accurate health content. Published Dec 15, 2025 Updated Dec 30, 2025 Author Founder, Director Patrick Nagle is an accomplished tech entrepreneur and venture investor. Drawing on his professional expertise and personal experience, he is dedicated to advancing MentalHealth.com. Published Dec 15, 2025 Updated Dec 30, 2025
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Schizophrenia # Schizophrenia Medically reviewed by [![Shivani Kharod, Ph.D.](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==)![Shivani Kharod, Ph.D.](https://www.mentalhealth.com/wp-content/uploads/2025/03/Shivani-Kharod-150x150.jpg)Shivani Kharod, Ph.D.](https://www.mentalhealth.com/people/shivani-kharod) – Written by [![Patrick Nagle](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==)![Patrick Nagle](https://www.mentalhealth.com/wp-content/uploads/2025/02/patrick-nagle-150x150.jpeg)Patrick Nagle](https://www.mentalhealth.com/people/patrick-nagle) – Updated on December 30, 2025 On this page: - On this page: - [What Is Schizophrenia?](https://www.mentalhealth.com/library/schizophrenia#what-is-schizophrenia) - [Schizophrenia Symptoms](https://www.mentalhealth.com/library/schizophrenia#schizophrenia-symptoms) - [Historical Subtypes](https://www.mentalhealth.com/library/schizophrenia#historical-subtypes) - [Causes and Risk Factors](https://www.mentalhealth.com/library/schizophrenia#causes-and-risk-factors) - [Diagnosing Schizophrenia](https://www.mentalhealth.com/library/schizophrenia#diagnosing-schizophrenia) - [Schizophrenia Treatment](https://www.mentalhealth.com/library/schizophrenia#schizophrenia-treatment) - [Looking Ahead With Hope](https://www.mentalhealth.com/library/schizophrenia#looking-ahead-with-hope) Schizophrenia is one of the most misunderstood [mental health conditions](https://www.mentalhealth.com/library/mental-health-conditions), often shaped by fear, stigma, and misinformation. In reality, it is a treatable illness. With appropriate care and sustained support, many people living with schizophrenia can manage symptoms, regain stability, and lead meaningful, fulfilling lives. ![Schizophrenia](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA+gAAAIPAQAAAADI7snHAAAAAnRSTlMAAHaTzTgAAABXSURBVHja7cExAQAAAMKg9U9tCj+gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPgaA3EAAeCn92IAAAAASUVORK5CYII=) ![Schizophrenia](https://www.mentalhealth.com/wp-content/uploads/2025/06/Schizophrenia_Explained.jpeg) ## What Is Schizophrenia? Schizophrenia is a complex and chronic mental health condition that affects how people perceive reality, regulate emotions, think, and relate to others. It affects approximately one percent of the global population and most commonly emerges in [late adolescence or early adulthood](https://www.mentalhealth.com/library/schizoaffective-disorder-progression-with-age) [\[1\]](https://www.mentalhealth.com/library/schizophrenia#reference-1). Despite persistent misconceptions, schizophrenia is not the same as having a [split personality](https://www.mentalhealth.com/library/schizoid-personality-disorder-and-modern-world). Instead, it involves periods in which a person’s perception of reality becomes distorted through symptoms such as hallucinations, delusions, or disorganized thinking. These experiences can be intense, but they are not always constant. Many individuals experience periods of remission during which symptoms lessen or temporarily subside. The severity and pattern of symptoms vary widely from person to person. Importantly, schizophrenia is not defined solely by symptoms. Many people living with the condition demonstrate resilience, creativity, and emotional insight. With appropriate care, [supportive relationships](https://www.mentalhealth.com/library/relationships-support), and [increased self awareness](https://www.mentalhealth.com/library/emotional-intelligence-self-awareness), individuals can achieve stability, rebuild connection, and pursue meaningful and fulfilling lives. Understanding schizophrenia as a treatable medical condition, rather than a personal failing, is essential to reducing stigma and supporting [mental health](https://www.mentalhealth.com/library/mental-health). ## Schizophrenia Symptoms [The symptoms of schizophrenia](https://www.mentalhealth.com/library/what-schizoaffective-episode-looks-like) vary significantly from person to person, but they are commonly grouped into three categories known as positive, negative, and cognitive symptoms [\[2\]](https://www.mentalhealth.com/library/schizophrenia#reference-2). These groupings are descriptive rather than judgmental and help explain how schizophrenia can affect perception, emotion, and thinking in everyday life. - [**Positive symptoms**](https://www.mentalhealth.com/library/positive-symptoms-schizophrenia-disorganized-negative) refer to experiences that are added to a person’s usual perception of reality. These symptoms often feel vivid and convincing and can be distressing. Hallucinations involve seeing, hearing, smelling, tasting, or feeling sensations that others do not experience, with hearing voices being the most common example. Delusions are strongly held beliefs that persist despite clear evidence to the contrary, such as beliefs of persecution, grandiosity, or thought broadcasting. - **Negative symptoms** involve a reduction or absence of typical emotional expression, motivation, or behavior. Although they are often less visible than hallucinations or delusions, they can significantly affect daily functioning and quality of life. Common examples include social withdrawal, emotional flatness, reduced motivation, and difficulty initiating or completing everyday tasks. - **Cognitive symptoms** affect how a person processes information, organizes thoughts, and completes mental tasks. These changes can interfere with school, work, and daily routines. Common challenges include disorganized thinking or speech, difficulty focusing or planning, and problems with memory or learning new information. ## Historical Subtypes of Schizophrenia Historically, [schizophrenia was divided into subtypes](https://www.mentalhealth.com/library/historical-contemporary-understandings-schizophrenia) to reflect differences in symptom presentation. Although the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition no longer uses these subtypes for diagnosis [\[3\]](https://www.mentalhealth.com/library/schizophrenia#reference-3), they remain helpful for understanding the range of experiences associated with the condition. - **Paranoid schizophrenia** was characterized primarily by persistent delusions and hallucinations, often involving themes of fear or persecution. Disorganized schizophrenia involved disorganized speech, behavior, and emotional responses that appeared disconnected from the situation. - **Residual schizophrenia** describes individuals whose active psychotic symptoms had decreased but who continued to experience negative symptoms such as emotional withdrawal or reduced motivation. - **Catatonic schizophrenia** involved significant disturbances in movement or behavior, ranging from immobility to excessive agitation. Undifferentiated schizophrenia applied when symptoms were present but did not fit clearly into one category. Even as diagnostic practices have evolved, these classifications continue to offer helpful context for understanding the different ways schizophrenia can present. ## Causes and Risk Factors The exact cause of schizophrenia is not fully understood, but research indicates that it develops through a complex interaction of genetic, biological, and environmental factors [\[4\]](https://www.mentalhealth.com/library/schizophrenia#reference-4). Understanding these influences reinforces that schizophrenia does not result from a single event, decision, or personal weakness. [Genetics play a role](https://www.mentalhealth.com/library/is-schizophrenia-genetic) in vulnerability to schizophrenia. Individuals with a close family member who has the condition are at increased risk, although genetics alone do not determine whether schizophrenia will develop. [Age is also an important factor](https://www.mentalhealth.com/library/age-onset-schizophreniform-disorder), as symptoms most commonly emerge between the ages of sixteen and thirty, with males often experiencing earlier onset than females. Biological research has identified differences in brain structure and function among people with schizophrenia, particularly in systems involving neurotransmitters such as dopamine and glutamate [\[5\]](https://www.mentalhealth.com/library/schizophrenia#reference-5). These chemicals are essential for regulating perception, emotion, and thought processes, and disruptions in their activity are believed to contribute significantly to symptom development. Environmental and experiential factors can further increase risk, especially when combined with genetic vulnerability [\[6\]](https://www.mentalhealth.com/library/schizophrenia#reference-6). These factors include substance use during adolescence, [exposure to trauma](https://www.mentalhealth.com/library/trauma) or [chronic stress](https://www.mentalhealth.com/library/long-term-consequences-of-negative-stress), prenatal or birth complications, and prolonged social stressors such as discrimination, overcrowded living environments, or social isolation [\[7\]](https://www.mentalhealth.com/library/schizophrenia#reference-7). ## Diagnosing Schizophrenia Accurate diagnosis is essential for effective treatment and long term stability. Schizophrenia cannot be identified through a single medical test. Instead, clinicians rely on [comprehensive psychiatric evaluation](https://www.mentalhealth.com/library/assessments-diagnosis), behavioral observation, and detailed personal history [\[8\]](https://www.mentalhealth.com/library/schizophrenia#reference-8). According to established diagnostic guidelines, symptoms must be present for a defined period and must significantly interfere with daily functioning. [The Diagnostic and Statistical Manual of Mental Disorders Fifth Edition](https://www.mentalhealth.com/library/schizophrenia-dsm-5-criteria) requires symptoms to persist for at least six months, while the International Classification of Diseases Eleventh Revision allows diagnosis after one month of continuous symptoms [\[9\]](https://www.mentalhealth.com/library/schizophrenia#reference-9). Core symptoms considered during diagnosis include hallucinations, delusions, disorganized speech or behavior, and negative symptoms. Diagnosis also involves ruling out medical, neurological, or substance related causes. Clinicians often gather information from family members or caregivers and assess for co occurring conditions such as mood disorders or substance use disorders. Early diagnosis is associated with better treatment response, reduced symptom severity, and [improved long term outcomes](https://www.mentalhealth.com/library/life-expectancy-for-schizophrenia). ## Schizophrenia Treatment Effective management of schizophrenia requires a coordinated and long term treatment approach that integrates [medication](https://www.mentalhealth.com/library/medication-for-schizophrenia), therapy, and psychosocial support [\[10\]](https://www.mentalhealth.com/library/schizophrenia#reference-10). Although schizophrenia is a chronic condition, treatment can significantly reduce symptoms and improve quality of life. [Antipsychotic medications](https://www.mentalhealth.com/library/antipsychotics) are a central component of treatment. Earlier medications can be effective but are more likely to cause movement related side effects. Newer medications are often preferred due to improved tolerability, though they require careful monitoring for metabolic effects such as weight gain or changes in blood sugar [\[11\]](https://www.mentalhealth.com/library/schizophrenia#reference-11). Ongoing medical supervision helps ensure medications remain safe and effective. [Psychotherapy](https://www.mentalhealth.com/library/psychotherapy) and [social support](https://www.mentalhealth.com/library/support-groups) are equally important. [Cognitive Behavioral Therapy](https://www.mentalhealth.com/library/cognitive-behavioral-therapy) helps individuals manage distressing thoughts and symptoms. [Family therapy](https://www.mentalhealth.com/library/marriage-family-therapy) improves communication and understanding within the home, while social skills training supports confidence and independence. Participation in education, employment, or community activities further promotes recovery and social connection. Recognizing early warning signs of relapse allows for timely intervention. Daily [self-care practices](https://www.mentalhealth.com/library/self-care) such as regular sleep, physical activity, balanced nutrition, and avoidance of substance use support emotional stability. [Mindfulness practices](https://www.mentalhealth.com/library/mindfulness-meditation) and creative activities can further strengthen resilience and coping skills [\[12\]](https://www.mentalhealth.com/library/schizophrenia#reference-12). ## Looking Ahead With Hope Schizophrenia is a serious but clinically manageable mental health condition. With early diagnosis, integrated treatment, and informed community support, individuals can achieve stability and lead meaningful lives. Greater understanding of schizophrenia helps reduce stigma, promote empathy, and encourage timely intervention. By recognizing both the [challenges of the condition](https://www.mentalhealth.com/library/schizophrenia-onset) and the [realistic hope for recovery](https://www.mentalhealth.com/library/recovery), individuals, families, and communities can support dignity, resilience, and long term well being. ![Patrick Nagle](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAEsAQAAAABRBrPYAAAAAnRSTlMAAHaTzTgAAAAiSURBVGje7cExAQAAAMKg9U9tCj+gAAAAAAAAAAAAAAB4GS20AAH/6QlrAAAAAElFTkSuQmCC) ![Patrick Nagle](https://www.mentalhealth.com/wp-content/uploads/2025/02/patrick-nagle-300x300.jpeg) ## Be the first to read new articles from Patrick Nagle Join MentalHealth.com for free to get updates ## You may also like [![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAwAAAAIAAQAAAAAdjTaXAAAAAnRSTlMAAHaTzTgAAABHSURBVHja7cExAQAAAMKg9U9tDB+gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvgbCAAABqCxAvgAAAABJRU5ErkJggg==)![](https://www.mentalhealth.com/wp-content/uploads/2025/06/Understanding-Schizophrenia-Onset-768x512.jpeg)](https://www.mentalhealth.com/library/schizophrenia-onset) [Schizophrenia Onset](https://www.mentalhealth.com/library/schizophrenia-onset) ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==) ![](https://www.mentalhealth.com/wp-content/uploads/2025/03/Linda-Armstrong-150x150.jpg) [Linda Armstrong](https://www.mentalhealth.com/people/linda-armstrong) Writer [![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAwAAAAH/AQAAAADIoYfGAAAAAnRSTlMAAHaTzTgAAABHSURBVHja7cGBAAAAAMOg+VPf4ARVAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAPBnwABB1HO3AAAAABJRU5ErkJggg==)![](https://www.mentalhealth.com/wp-content/uploads/2025/06/Schizophreniform-Onset-768x511.jpeg)](https://www.mentalhealth.com/library/age-onset-schizophreniform-disorder) [Age Factors in Schizophreniform Disorders](https://www.mentalhealth.com/library/age-onset-schizophreniform-disorder) ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==) ![](https://www.mentalhealth.com/wp-content/uploads/2025/03/Linda-Armstrong-150x150.jpg) [Linda Armstrong](https://www.mentalhealth.com/people/linda-armstrong) Writer [![MentalHealth.com Logo](https://www.mentalhealth.com/wp-content/uploads/2024/10/MentalHealth-Logo.jpg)](https://www.mentalhealth.com/library/is-schizophrenia-genetic) [Schizophrenia and Genetics](https://www.mentalhealth.com/library/is-schizophrenia-genetic) ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==) ![](https://www.mentalhealth.com/wp-content/uploads/2025/03/Christine-Dayton-150x150.jpg) [Christine Dayton](https://www.mentalhealth.com/people/christine-dayton) Writer ## References 1. Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). *Schizophrenia*. In StatPearls. StatPearls Publishing.<https://www.ncbi.nlm.nih.gov/books/NBK539864/>. 2. National Institute of Mental Health. (n.d.). *Schizophrenia*. <https://www.nimh.nih.gov/health/publications/schizophrenia>. 3. Regier D.A., Kuhl E.A. & Kupfer D.J. The DSM‑5: Classification and criteria changes. *World Psychiatry*. <https://doi.org/10.1002/wps.20050>. 4. Stilo, S. A., & Murray, R. M. (2019). Non-genetic factors in schizophrenia. *Current Psychiatry Reports, 21,* Article 100.<https://pubmed.ncbi.nlm.nih.gov/31522306/>. 5. Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). *Schizophrenia*. In *StatPearls*. StatPearls Publishing.<https://www.ncbi.nlm.nih.gov/books/NBK539864/>. 6. Wahbeh, M. H., & Avramopoulos, D. (2021). Gene–environment interactions in schizophrenia: A literature review. *Genes, 12*(1), 39.<https://pubmed.ncbi.nlm.nih.gov/34946799/>. 7. Brandt, L., Liu, S., Heim, C., & Heinz, A. (2022). The effects of social isolation stress and discrimination on mental health. *Translational Psychiatry, 12,* Article 398.<https://doi.org/10.1038/s41398-022-02178-4>. 8. Jablensky, A. (2010). The diagnostic concept of schizophrenia: Its history, evolution, and future prospects. *Dialogues in Clinical Neuroscience, 12*(3), 271–287.<https://pubmed.ncbi.nlm.nih.gov/20954425/>. 9. First, Michael B., Gaebel, W., Maj, M., Stein, D. J., Kogan, C. S., Saunders, J. B., Poznyak, V. B., Gureje, O., Lewis-Fernández, R., Maercker, A., Brewin, C. R., Cloitre, M., Claudino, A., Pike, K. M., Baird, G., Skuse, D., Krueger, R. B., Briken, P., et al. (2021). An organization- and category-level comparison of diagnostic requirements for mental disorders in ICD-11 and DSM-5. *World Psychiatry*, 20(1), 34–51. <https://doi.org/10.1002/wps.20825>. 10. Guccione, C., Lanza di Scalea, G., Ambrosecchia, M., Terrone, G., Di Cesare, G., Ducci, G., & Ferri, R. (2021). Early signs of schizophrenia and autonomic nervous system dysregulation: A literature review. *Clinical Neuropsychiatry, 18*(6), 291–304.<https://pubmed.ncbi.nlm.nih.gov/34908942/> 11. Chien, W. T., Leung, S. F., Yeung, F. K. K., & Wong, W. K. (2013). Current approaches to treatments for schizophrenia spectrum disorders, part II: Psychosocial interventions and patient-focused perspectives in psychiatric care. *Neuropsychiatric Disease and Treatment, 9,* 1463–1481.<https://pubmed.ncbi.nlm.nih.gov/24109184/> 12. Chokhawala, K., & Stevens, L. (2023). *Antipsychotic medications*. StatPearls Publishing.<https://pubmed.ncbi.nlm.nih.gov/30137788/> All References ## Medical Content [The Clinical Affairs Team](https://www.mentalhealth.com/clinical-affairs/clinical-affairs-team) at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. 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Published Dec 15, 2025 Updated Dec 30, 2025 *** [![Patrick Nagle](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==)![Patrick Nagle](https://www.mentalhealth.com/wp-content/uploads/2025/02/patrick-nagle-150x150.jpeg)](https://www.mentalhealth.com/people/patrick-nagle) Author [Patrick Nagle](https://www.mentalhealth.com/people/patrick-nagle) Founder, Director Patrick Nagle is an accomplished tech entrepreneur and venture investor. Drawing on his professional expertise and personal experience, he is dedicated to advancing MentalHealth.com. Published Dec 15, 2025 Updated Dec 30, 2025 Medically reviewed by [![Shivani Kharod, Ph.D.](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==)![Shivani Kharod, Ph.D.](https://www.mentalhealth.com/wp-content/uploads/2025/03/Shivani-Kharod-150x150.jpg)Shivani Kharod, Ph.D.](https://www.mentalhealth.com/people/shivani-kharod) – Written by [![Patrick Nagle](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJYAAACWAQAAAAAUekxPAAAAAnRSTlMAAHaTzTgAAAAaSURBVEjH7cExAQAAAMKg9U9tDQ+gAACAdwMLuAABXZHjmQAAAABJRU5ErkJggg==)![Patrick Nagle](https://www.mentalhealth.com/wp-content/uploads/2025/02/patrick-nagle-150x150.jpeg)Patrick Nagle](https://www.mentalhealth.com/people/patrick-nagle) – Updated on December 30, 2025 ![Schizophrenia](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACeAQMAAACyxqX8AAAABlBMVEUAAAD///+l2Z/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAABxJREFUWMPtwQENAAAAwqD3T20PBxQAAAAAAPBvGBIAAXLEawMAAAAASUVORK5CYII=) ![Schizophrenia](https://www.mentalhealth.com/wp-content/uploads/2025/06/Schizophrenia_Explained-300x158.jpeg) ### Additional Reading - [Schizophrenia Onset](https://www.mentalhealth.com/library/schizophrenia-onset) - [Age Factors in Schizophreniform Disorders](https://www.mentalhealth.com/library/age-onset-schizophreniform-disorder) - [Schizophrenia and Genetics](https://www.mentalhealth.com/library/is-schizophrenia-genetic) - [Recognizing a Schizoaffective Episode](https://www.mentalhealth.com/library/what-schizoaffective-episode-looks-like) - [Schizophreniform and Psychotic NOS Symptoms](https://www.mentalhealth.com/library/symptoms-schizophreniform-psychotic-disorder-nos) - [Schizophrenia Hotline Number](https://www.mentalhealth.com/library/schizophrenia-helpline-number) - [Other Therapies for Schizophrenia](https://www.mentalhealth.com/library/other-therapies-schizophrenia) - [Historical and Modern Views of Schizophrenia](https://www.mentalhealth.com/library/historical-contemporary-understandings-schizophrenia) - [Medications for Schizophrenia](https://www.mentalhealth.com/library/medication-for-schizophrenia) - [Schizoaffective Disorder and Aging](https://www.mentalhealth.com/library/schizoaffective-disorder-progression-with-age) [Get started](https://www.mentalhealth.com/signup) **Why Choose Us** MentalHealth.com promotes emotional, psychological, and social well-being through reliable resources, accessible services, and nurturing communities. **Created by MentalHealth.com** Guiding self-understanding and connection. 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- On this page: - [What Is Schizophrenia?](https://www.mentalhealth.com/library/schizophrenia#what-is-schizophrenia) - [Schizophrenia Symptoms](https://www.mentalhealth.com/library/schizophrenia#schizophrenia-symptoms) - [Historical Subtypes](https://www.mentalhealth.com/library/schizophrenia#historical-subtypes) - [Causes and Risk Factors](https://www.mentalhealth.com/library/schizophrenia#causes-and-risk-factors) - [Diagnosing Schizophrenia](https://www.mentalhealth.com/library/schizophrenia#diagnosing-schizophrenia) - [Schizophrenia Treatment](https://www.mentalhealth.com/library/schizophrenia#schizophrenia-treatment) - [Looking Ahead With Hope](https://www.mentalhealth.com/library/schizophrenia#looking-ahead-with-hope) Schizophrenia is one of the most misunderstood [mental health conditions](https://www.mentalhealth.com/library/mental-health-conditions), often shaped by fear, stigma, and misinformation. In reality, it is a treatable illness. With appropriate care and sustained support, many people living with schizophrenia can manage symptoms, regain stability, and lead meaningful, fulfilling lives. ## What Is Schizophrenia? Schizophrenia is a complex and chronic mental health condition that affects how people perceive reality, regulate emotions, think, and relate to others. It affects approximately one percent of the global population and most commonly emerges in [late adolescence or early adulthood](https://www.mentalhealth.com/library/schizoaffective-disorder-progression-with-age) [\[1\]](https://www.mentalhealth.com/library/schizophrenia#reference-1). Despite persistent misconceptions, schizophrenia is not the same as having a [split personality](https://www.mentalhealth.com/library/schizoid-personality-disorder-and-modern-world). Instead, it involves periods in which a person’s perception of reality becomes distorted through symptoms such as hallucinations, delusions, or disorganized thinking. These experiences can be intense, but they are not always constant. Many individuals experience periods of remission during which symptoms lessen or temporarily subside. The severity and pattern of symptoms vary widely from person to person. Importantly, schizophrenia is not defined solely by symptoms. Many people living with the condition demonstrate resilience, creativity, and emotional insight. With appropriate care, [supportive relationships](https://www.mentalhealth.com/library/relationships-support), and [increased self awareness](https://www.mentalhealth.com/library/emotional-intelligence-self-awareness), individuals can achieve stability, rebuild connection, and pursue meaningful and fulfilling lives. Understanding schizophrenia as a treatable medical condition, rather than a personal failing, is essential to reducing stigma and supporting [mental health](https://www.mentalhealth.com/library/mental-health). ## Schizophrenia Symptoms [The symptoms of schizophrenia](https://www.mentalhealth.com/library/what-schizoaffective-episode-looks-like) vary significantly from person to person, but they are commonly grouped into three categories known as positive, negative, and cognitive symptoms [\[2\]](https://www.mentalhealth.com/library/schizophrenia#reference-2). These groupings are descriptive rather than judgmental and help explain how schizophrenia can affect perception, emotion, and thinking in everyday life. - [**Positive symptoms**](https://www.mentalhealth.com/library/positive-symptoms-schizophrenia-disorganized-negative) refer to experiences that are added to a person’s usual perception of reality. These symptoms often feel vivid and convincing and can be distressing. Hallucinations involve seeing, hearing, smelling, tasting, or feeling sensations that others do not experience, with hearing voices being the most common example. Delusions are strongly held beliefs that persist despite clear evidence to the contrary, such as beliefs of persecution, grandiosity, or thought broadcasting. - **Negative symptoms** involve a reduction or absence of typical emotional expression, motivation, or behavior. Although they are often less visible than hallucinations or delusions, they can significantly affect daily functioning and quality of life. Common examples include social withdrawal, emotional flatness, reduced motivation, and difficulty initiating or completing everyday tasks. - **Cognitive symptoms** affect how a person processes information, organizes thoughts, and completes mental tasks. These changes can interfere with school, work, and daily routines. Common challenges include disorganized thinking or speech, difficulty focusing or planning, and problems with memory or learning new information. ## Historical Subtypes of Schizophrenia Historically, [schizophrenia was divided into subtypes](https://www.mentalhealth.com/library/historical-contemporary-understandings-schizophrenia) to reflect differences in symptom presentation. Although the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition no longer uses these subtypes for diagnosis [\[3\]](https://www.mentalhealth.com/library/schizophrenia#reference-3), they remain helpful for understanding the range of experiences associated with the condition. - **Paranoid schizophrenia** was characterized primarily by persistent delusions and hallucinations, often involving themes of fear or persecution. Disorganized schizophrenia involved disorganized speech, behavior, and emotional responses that appeared disconnected from the situation. - **Residual schizophrenia** describes individuals whose active psychotic symptoms had decreased but who continued to experience negative symptoms such as emotional withdrawal or reduced motivation. - **Catatonic schizophrenia** involved significant disturbances in movement or behavior, ranging from immobility to excessive agitation. Undifferentiated schizophrenia applied when symptoms were present but did not fit clearly into one category. Even as diagnostic practices have evolved, these classifications continue to offer helpful context for understanding the different ways schizophrenia can present. ## Causes and Risk Factors The exact cause of schizophrenia is not fully understood, but research indicates that it develops through a complex interaction of genetic, biological, and environmental factors [\[4\]](https://www.mentalhealth.com/library/schizophrenia#reference-4). Understanding these influences reinforces that schizophrenia does not result from a single event, decision, or personal weakness. [Genetics play a role](https://www.mentalhealth.com/library/is-schizophrenia-genetic) in vulnerability to schizophrenia. Individuals with a close family member who has the condition are at increased risk, although genetics alone do not determine whether schizophrenia will develop. [Age is also an important factor](https://www.mentalhealth.com/library/age-onset-schizophreniform-disorder), as symptoms most commonly emerge between the ages of sixteen and thirty, with males often experiencing earlier onset than females. Biological research has identified differences in brain structure and function among people with schizophrenia, particularly in systems involving neurotransmitters such as dopamine and glutamate [\[5\]](https://www.mentalhealth.com/library/schizophrenia#reference-5). These chemicals are essential for regulating perception, emotion, and thought processes, and disruptions in their activity are believed to contribute significantly to symptom development. Environmental and experiential factors can further increase risk, especially when combined with genetic vulnerability [\[6\]](https://www.mentalhealth.com/library/schizophrenia#reference-6). These factors include substance use during adolescence, [exposure to trauma](https://www.mentalhealth.com/library/trauma) or [chronic stress](https://www.mentalhealth.com/library/long-term-consequences-of-negative-stress), prenatal or birth complications, and prolonged social stressors such as discrimination, overcrowded living environments, or social isolation [\[7\]](https://www.mentalhealth.com/library/schizophrenia#reference-7). ## Diagnosing Schizophrenia Accurate diagnosis is essential for effective treatment and long term stability. Schizophrenia cannot be identified through a single medical test. Instead, clinicians rely on [comprehensive psychiatric evaluation](https://www.mentalhealth.com/library/assessments-diagnosis), behavioral observation, and detailed personal history [\[8\]](https://www.mentalhealth.com/library/schizophrenia#reference-8). According to established diagnostic guidelines, symptoms must be present for a defined period and must significantly interfere with daily functioning. [The Diagnostic and Statistical Manual of Mental Disorders Fifth Edition](https://www.mentalhealth.com/library/schizophrenia-dsm-5-criteria) requires symptoms to persist for at least six months, while the International Classification of Diseases Eleventh Revision allows diagnosis after one month of continuous symptoms [\[9\]](https://www.mentalhealth.com/library/schizophrenia#reference-9). Core symptoms considered during diagnosis include hallucinations, delusions, disorganized speech or behavior, and negative symptoms. Diagnosis also involves ruling out medical, neurological, or substance related causes. Clinicians often gather information from family members or caregivers and assess for co occurring conditions such as mood disorders or substance use disorders. Early diagnosis is associated with better treatment response, reduced symptom severity, and [improved long term outcomes](https://www.mentalhealth.com/library/life-expectancy-for-schizophrenia). ## Schizophrenia Treatment Effective management of schizophrenia requires a coordinated and long term treatment approach that integrates [medication](https://www.mentalhealth.com/library/medication-for-schizophrenia), therapy, and psychosocial support [\[10\]](https://www.mentalhealth.com/library/schizophrenia#reference-10). Although schizophrenia is a chronic condition, treatment can significantly reduce symptoms and improve quality of life. [Antipsychotic medications](https://www.mentalhealth.com/library/antipsychotics) are a central component of treatment. Earlier medications can be effective but are more likely to cause movement related side effects. Newer medications are often preferred due to improved tolerability, though they require careful monitoring for metabolic effects such as weight gain or changes in blood sugar [\[11\]](https://www.mentalhealth.com/library/schizophrenia#reference-11). Ongoing medical supervision helps ensure medications remain safe and effective. [Psychotherapy](https://www.mentalhealth.com/library/psychotherapy) and [social support](https://www.mentalhealth.com/library/support-groups) are equally important. [Cognitive Behavioral Therapy](https://www.mentalhealth.com/library/cognitive-behavioral-therapy) helps individuals manage distressing thoughts and symptoms. [Family therapy](https://www.mentalhealth.com/library/marriage-family-therapy) improves communication and understanding within the home, while social skills training supports confidence and independence. Participation in education, employment, or community activities further promotes recovery and social connection. Recognizing early warning signs of relapse allows for timely intervention. Daily [self-care practices](https://www.mentalhealth.com/library/self-care) such as regular sleep, physical activity, balanced nutrition, and avoidance of substance use support emotional stability. [Mindfulness practices](https://www.mentalhealth.com/library/mindfulness-meditation) and creative activities can further strengthen resilience and coping skills [\[12\]](https://www.mentalhealth.com/library/schizophrenia#reference-12). ## Looking Ahead With Hope Schizophrenia is a serious but clinically manageable mental health condition. With early diagnosis, integrated treatment, and informed community support, individuals can achieve stability and lead meaningful lives. Greater understanding of schizophrenia helps reduce stigma, promote empathy, and encourage timely intervention. By recognizing both the [challenges of the condition](https://www.mentalhealth.com/library/schizophrenia-onset) and the [realistic hope for recovery](https://www.mentalhealth.com/library/recovery), individuals, families, and communities can support dignity, resilience, and long term well being. ![Patrick Nagle](https://www.mentalhealth.com/wp-content/uploads/2025/02/patrick-nagle-300x300.jpeg) ## Be the first to read new articles from Patrick Nagle Join MentalHealth.com for free to get updates ## References 1. Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). *Schizophrenia*. In StatPearls. StatPearls Publishing.<https://www.ncbi.nlm.nih.gov/books/NBK539864/>. 2. National Institute of Mental Health. (n.d.). *Schizophrenia*. <https://www.nimh.nih.gov/health/publications/schizophrenia>. 3. Regier D.A., Kuhl E.A. & Kupfer D.J. The DSM‑5: Classification and criteria changes. *World Psychiatry*. <https://doi.org/10.1002/wps.20050>. 4. Stilo, S. A., & Murray, R. M. (2019). Non-genetic factors in schizophrenia. *Current Psychiatry Reports, 21,* Article 100.<https://pubmed.ncbi.nlm.nih.gov/31522306/>. 5. Hany, M., Rehman, B., Rizvi, A., & Chapman, J. (2024, February 23). *Schizophrenia*. In *StatPearls*. StatPearls Publishing.<https://www.ncbi.nlm.nih.gov/books/NBK539864/>. 6. Wahbeh, M. H., & Avramopoulos, D. (2021). Gene–environment interactions in schizophrenia: A literature review. *Genes, 12*(1), 39.<https://pubmed.ncbi.nlm.nih.gov/34946799/>. 7. Brandt, L., Liu, S., Heim, C., & Heinz, A. (2022). The effects of social isolation stress and discrimination on mental health. *Translational Psychiatry, 12,* Article 398.<https://doi.org/10.1038/s41398-022-02178-4>. 8. Jablensky, A. (2010). The diagnostic concept of schizophrenia: Its history, evolution, and future prospects. *Dialogues in Clinical Neuroscience, 12*(3), 271–287.<https://pubmed.ncbi.nlm.nih.gov/20954425/>. 9. First, Michael B., Gaebel, W., Maj, M., Stein, D. J., Kogan, C. S., Saunders, J. B., Poznyak, V. B., Gureje, O., Lewis-Fernández, R., Maercker, A., Brewin, C. R., Cloitre, M., Claudino, A., Pike, K. M., Baird, G., Skuse, D., Krueger, R. B., Briken, P., et al. (2021). An organization- and category-level comparison of diagnostic requirements for mental disorders in ICD-11 and DSM-5. *World Psychiatry*, 20(1), 34–51. <https://doi.org/10.1002/wps.20825>. 10. Guccione, C., Lanza di Scalea, G., Ambrosecchia, M., Terrone, G., Di Cesare, G., Ducci, G., & Ferri, R. (2021). Early signs of schizophrenia and autonomic nervous system dysregulation: A literature review. *Clinical Neuropsychiatry, 18*(6), 291–304.<https://pubmed.ncbi.nlm.nih.gov/34908942/> 11. Chien, W. T., Leung, S. F., Yeung, F. K. K., & Wong, W. K. (2013). Current approaches to treatments for schizophrenia spectrum disorders, part II: Psychosocial interventions and patient-focused perspectives in psychiatric care. *Neuropsychiatric Disease and Treatment, 9,* 1463–1481.<https://pubmed.ncbi.nlm.nih.gov/24109184/> 12. Chokhawala, K., & Stevens, L. (2023). *Antipsychotic medications*. StatPearls Publishing.<https://pubmed.ncbi.nlm.nih.gov/30137788/> ## Medical Content [The Clinical Affairs Team](https://www.mentalhealth.com/clinical-affairs/clinical-affairs-team) at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. 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