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[ABC Medical Center](https://centromedicoabc.com/en/ "Go to ABC Medical Center.") \> [Diseases](https://centromedicoabc.com/en/padecimientos/ "Go to Diseases.") \> Diarrhea (Antibiotic-Associated) # What is diarrhea (antibiotic-associated)? 23 January 2026 This is a common, usually mild diarrheal process caused by receiving antibiotic treatment for a bacterial infection. Antibiotics cause an imbalance in the gastrointestinal flora, leading to three or more soft or semi-liquid bowel movements per day. Antibiotic-associated diarrhea affects two out of every 10 people who take these medications. It usually disappears a few days after stopping the medication and does not require any treatment. However, if you are taking antibiotics and the diarrhea is severe, it is necessary to stop the treatment and switch to another one that does not cause these effects on you. In cases where antibiotic intake promotes a bacterial imbalance in the digestive system where the bacterium *Clostridium difficile* proliferates, the symptoms can be quite severe. While any antibiotic can cause diarrhea, the ones most frequently causing these processes are macrolides, penicillins, cephalosporins, and fluoroquinolones. Potential Risks for Developing Antibiotic-Associated Diarrhea include: - Previous antibiotic-associated diarrhea. - Long-term antibiotic treatments. - Taking combined antibiotics. ## Signs and symptoms Diarrhea (Antibiotic-Associated) Common diarrheal processes associated with antibiotic intake do not present serious symptoms, only manifesting: - Softened or watery stool. - More than three bowel movements per day. When diarrhea is caused by the proliferation of the bacterium *Clostridium difficile*, symptoms include: - Intense diarrheal episodes. - Dehydration. - Abdominal pain. - Abdominal cramps. - High temperature (fever). - Nausea. - Loss of appetite. The most common complication is dehydration, which, if left untreated and allowed to become extreme, can have fatal consequences. ## Diagnosis and treatment Diarrhea (Antibiotic-Associated) Once the doctor analyzes your symptoms and clinical history, they will perform a physical examination and ask you which antibiotics you took and the duration of the treatment received. If the symptoms are intense, they will request a stool culture (coprocultivo) to identify if the cause is an infection by *Clostridium difficile*. The treatment will depend on the severity of the symptoms, but generally includes: - Constant hydration. - Avoiding greasy or heavily seasoned foods. - Anti-diarrheal medications. - Antacids. In the Internal Medicine Department at Centro Médico ABC, we provide medical care services with the highest quality and safety, from the prevention, diagnosis, timely treatment, and follow-up of infectious, respiratory, endocrinological, dermatological, rheumatic, nephrological, gastrointestinal, and hematological pathologies, including both chronic-degenerative conditions and acute cases, through a comprehensive and multidisciplinary model. ## Related centers and departments Diarrhea (Antibiotic-Associated) [Internal medicine](https://centromedicoabc.com/en/internal-medicine/) [Radiology and Molecular Imaging](https://centromedicoabc.com/en/radiology-and-molecular-imaging/) [Clinical Laboratory](https://centromedicoabc.com/en/clinical-laboratory/) ## Sources: - cun.es - topdoctors.es - cigna.com - mayoclinic.org - medlineplus.gov - msdmanuals.com - middlesexhealth.org - medigraphic.com - Chacón SMA, Bermúdez DLV, Rojas SDM. Infección por Clostridium difficile y el papel del trasplante de microbiota fecal. Revista Médica Sinergia. 2021;6(06):1-10. - Shveid GD, Canales ASJ, Muñoz BJM, et al. Colitis por Clostridium difficile durante el tratamiento de tuberculosis. An Med Asoc Med Hosp ABC. 2018;63(2):122-124. - Pérez-Cruz E, Sandoval-FMG. Factores de riesgo para mortalidad en pacientes con infección por Clostridium difficile. Gac Med Mex. 2019;155(4):343-349. **How can we help you?** *The dissemination of the content of this material is for informational purposes only and does not replace, under any circumstance or condition, a consultation with a specialist doctor, for which the ABC Medical Center is not responsible for the different use that may be given to it. If you require more information related to the subject, we suggest you contact the specialist doctor you trust directly.* ## Index **Content** [Contact Us](https://centromedicoabc.com/contacto/) [**Specialist in** Diarrhea (Antibiotic-Associated)](https://centromedicoabc.com/encuentra-a-tu-medico/?padecimiento=Diarrhea%20\(Antibiotic-Associated\)) [Look for a doctor](https://centromedicoabc.com/encuentra-a-tu-medico/?padecimiento=Diarrhea%20\(Antibiotic-Associated\)) **Pay in interest-free monthly installments in Specialty Centers, Check Ups, Diagnostic Tests, and Hospitalization** **Get from 3 to 9** interest-free installments\* with **American Express** or **6 installments\*** when paying with **Banamex, BBVA, HSBC, Santander** or **12 installments\*** when paying with **Banamex**. 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[SAVE & ACCEPT]() ✕ Contact us Precision Medicine **Error:** Contact form not found. We **help you** Send us your request and we will forward it to our specialists. We will get in touch with you very soon. If you have preferred times to receive our call, please indicate them in your message. Thank you for contacting us\! CERRAR ✕   **Interest-free months in:** **Interest-free months in:** - Specialty Centers - Diagnostic Studies - Check-ups - Hospitalization1 Choose from**3 to 9 months** when paying with American Express cards 2. Or **6 months** when paying with your credit card3 **Banamex, BBVA Bancomer, HSBC, Santander.** Or **12 months** exclusively when paying with **Banamex**3 Valid until **December 31, 2025.** Promotions not cumulative. Subject to restrictions 1. In hospitalization, medical fees are not included. 2. Minimum amount: \$1,500 for 3 to 6 months and \$3,000 for 7 to 9 months 3. Minimum amount \$1,500. (Cards issued abroad are not eligible). **Comparison** of COVID-19 vaccines Pfizer- BioNTech Pfizer-BioNTech **What is its effectiveness and what does it refer to?** **Vaccine type:** mRNA **Effectiveness:** 95% after the second dose in the prevention of symptomatic COVID-19. **No Does not contain egg, latex, or preservatives.** **How many doses are needed?** Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary). **Who should or shouldn’t get the vaccine?** People who should receive the vaccine are those over 16 years old. People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine such as polyethylene glycol (PEG) or polysorbate. **What are the possible side effects of the vaccine?** Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, malaise, and swollen lymph nodes. **How long will it take for me to be protected and what does it protect me from?** After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization. Moderna **What is its effectiveness and what does it refer to?** **Vaccine type:** mRNA **Effectiveness:** 94.5% after the second dose in the prevention of symptomatic COVID-19. **Does not contain egg, latex, or preservatives.** **How many doses are needed?** Two doses are needed, at least 28 days apart (or up to six weeks apart, if necessary). **Who should or shouldn’t get the vaccine?** People who should receive the vaccine are those over 18 years old. People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine. **What are the possible side effects of the vaccine?** Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, and swollen lymph nodes in the arm in which you received the injection. **How long will it take for me to be protected and what does it protect me from?** After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization. Janssen/ Johnson & Johnson Janssen/ Johnson & Johnson **What is its effectiveness and what does it refer to?** **Vector-based vaccine.** **Effectiveness:** 72.0% in the prevention of symptomatic COVID-19. 85% in the prevention of severe COVID-19. **Does not contain egg, latex, or preservatives./strong\>** ****How many doses are needed?** Only one dose in needed.** ****Who should or shouldn’t get the vaccine?** People who should receive the vaccine are those over 18 years old. People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine.** ****What are the possible side effects of the vaccine?** Pain where the injection was given, headache, fatigue, muscle pain, chills, fever, and nausea.** ****How long will it take for me to be protected and what does it protect me from?** After 28 days of having the complete scheme (the last dose applied), the protection period is still under study. It protects us from 85% serious COVID-19 or requiring hospitalization.** AstraZeneca and Oxford University AstraZeneca and Oxford University **What is its effectiveness and what does it refer to?** **Adenovirus vector-based vaccine.** **Effectiveness:** 82% after the second dose in the prevention of symptomatic COVID-19. **How many doses are needed?** Two doses are needed, at least 56 days apart (or up to 84 days apart, if necessary). **Who should or shouldn’t get the vaccine?** People who should receive the vaccine are those over 18 years old. People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine. **What are the possible side effects of the vaccine?** Pain where the injection was given, fatigue, headache, myalgia, arthralgia, and fever, which were mild to moderate in intensity and disappeared within 48 hours of vaccination. **How long will it take for me to be protected and what does it protect me from?** After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization. Sputnik V **What is its effectiveness and what does it refer to?** **Adenovirus vector-based vaccine.** **Effectiveness:** 92% after the second dose in the prevention of symptomatic COVID-19. **How many doses are needed?** Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary). **Who should or shouldn’t get the vaccine?** People who should receive the vaccine are those over 18 years old. People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine. **What are the possible side effects of the vaccine?** Pain where the injection was given, fatigue, headache, myalgia, arthralgia, and fever, which were mild to moderate in intensity and disappeared within 48 hours of vaccination. **How long will it take for me to be protected and what does it protect me from?** After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization. × ✕ Anti-Herpes Zoster Herpes zoster is a painful, burning rash. It usually appears on one part of the body and can last for several weeks. It can cause long-lasting severe pain and scarring. Bacterial skin infections, weakness, muscle paralysis, hearing or vision loss may occur less frequently. Herpes zoster is caused by the same virus that causes chickenpox. After you have had chickenpox, the virus that caused it remains in the body of nerve cells. Sometimes after many years, the virus becomes active again and causes herpes zoster. Vaccination is indicated in the following cases: - Immunization of patients from 50 years of age for the prevention of herpes zoster and post-herpetic neuralgia (PHN), reduce pain associated with acute or chronic herpes zoster. Scheme type: - Single dose. ✕ Rabies Human rabies is a viral disease transmitted by the bite of an infected animal. It is characterized by acute encephalomyelitis (an aggressive response of the immune system that destroys the myelin layer of the nerves and alters its function at the level of the brain or spinal cord). Vaccination is indicated in the following cases: - Prevention of rabies in subjects exposed to risk of contamination. It is recommended for certain international travelers, based on the occurrence of animal rabies in the destination country. Scheme type: There are two types. 1. Pre-exposure scheme, consists of three doses of rabies vaccine: - First dose, on the chosen date. - Second dose 7 days after the first dose. - Third dose 28 days after the first dose. 2\. Post-exposure scheme, people not vaccinated against rabies, consists of five doses of rabies vaccine. - First dose, on the date indicated. - Second dose 3 days after the first dose. - Third dose 7 days after the first dose. - Fourth dose 14 days after the first dose. - Fifth dose 28 days after the first dose. \* If the individual continues to be at risk of exposure to the disease, revaccination should be considered. ✕ Pneumococcal vaccines Pneumococcal disease can cause serious infections in the lungs (pneumonia), the bloodstream (bacteremia), and the lining of the brain and spinal cord (meningitis). Two vaccines help prevent pneumococcal disease: - Pneumoconjugate 13 (pneumococcal conjugate vaccine) - Pneumococcal 23 (pneumococcal polysaccharide vaccine) Vaccination is indicated in the following cases: - Active immunization for the prevention of invasive disease caused by Streptococcus pneumoniae in adults 65 years of age and older. Scheme type: - \*Two pneumococcal vaccines are recommended for all adults 65 years of age or older. \*One dose of Pneumococcal 13 vaccine should be given first, followed by one dose of Pneumococcal 23 vaccine, depending on your age and health.

This is a common, usually mild diarrheal process caused by receiving antibiotic treatment for a bacterial infection. Antibiotics cause an imbalance in the gastrointestinal flora, leading to three or more soft or semi-liquid bowel movements per day. Antibiotic-associated diarrhea affects two out of every 10 people who take these medications. It usually disappears a few days after stopping the medication and does not require any treatment. However, if you are taking antibiotics and the diarrhea is severe, it is necessary to stop the treatment and switch to another one that does not cause these effects on you. In cases where antibiotic intake promotes a bacterial imbalance in the digestive system where the bacterium *Clostridium difficile* proliferates, the symptoms can be quite severe. While any antibiotic can cause diarrhea, the ones most frequently causing these processes are macrolides, penicillins, cephalosporins, and fluoroquinolones. Potential Risks for Developing Antibiotic-Associated Diarrhea include: - Previous antibiotic-associated diarrhea. - Long-term antibiotic treatments. - Taking combined antibiotics. ## Signs and symptoms Diarrhea (Antibiotic-Associated) Common diarrheal processes associated with antibiotic intake do not present serious symptoms, only manifesting: - Softened or watery stool. - More than three bowel movements per day. When diarrhea is caused by the proliferation of the bacterium *Clostridium difficile*, symptoms include: - Intense diarrheal episodes. - Dehydration. - Abdominal pain. - Abdominal cramps. - High temperature (fever). - Nausea. - Loss of appetite. The most common complication is dehydration, which, if left untreated and allowed to become extreme, can have fatal consequences. ## Diagnosis and treatment Diarrhea (Antibiotic-Associated) Once the doctor analyzes your symptoms and clinical history, they will perform a physical examination and ask you which antibiotics you took and the duration of the treatment received. If the symptoms are intense, they will request a stool culture (coprocultivo) to identify if the cause is an infection by *Clostridium difficile*. The treatment will depend on the severity of the symptoms, but generally includes: - Constant hydration. - Avoiding greasy or heavily seasoned foods. - Anti-diarrheal medications. - Antacids. In the Internal Medicine Department at Centro Médico ABC, we provide medical care services with the highest quality and safety, from the prevention, diagnosis, timely treatment, and follow-up of infectious, respiratory, endocrinological, dermatological, rheumatic, nephrological, gastrointestinal, and hematological pathologies, including both chronic-degenerative conditions and acute cases, through a comprehensive and multidisciplinary model. ## Sources: - cun.es - topdoctors.es - cigna.com - mayoclinic.org - medlineplus.gov - msdmanuals.com - middlesexhealth.org - medigraphic.com - Chacón SMA, Bermúdez DLV, Rojas SDM. Infección por Clostridium difficile y el papel del trasplante de microbiota fecal. Revista Médica Sinergia. 2021;6(06):1-10. - Shveid GD, Canales ASJ, Muñoz BJM, et al. Colitis por Clostridium difficile durante el tratamiento de tuberculosis. An Med Asoc Med Hosp ABC. 2018;63(2):122-124. - Pérez-Cruz E, Sandoval-FMG. Factores de riesgo para mortalidad en pacientes con infección por Clostridium difficile. Gac Med Mex. 2019;155(4):343-349. *The dissemination of the content of this material is for informational purposes only and does not replace, under any circumstance or condition, a consultation with a specialist doctor, for which the ABC Medical Center is not responsible for the different use that may be given to it. If you require more information related to the subject, we suggest you contact the specialist doctor you trust directly.*