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| URL | https://www.healthdirect.gov.au/summer-skin-rashes |
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| Meta Title | Summer skin rashes - heat rash, hives and treatment | healthdirect |
| Meta Description | Summer rashes can be caused by things like sunlight, insects, sweating and overheating - especially if you have allergies or other pre-existing skin conditions. |
| Meta Canonical | null |
| Boilerpipe Text | Key facts
Summer skin rashes may happen in hot, humid weather or after sun exposure.
They may look like red, itchy patches, bumps or blisters.
Babies are more likely to get rashes because their skin is thinner and makes less sweat and oil.
Common causes include heat rash, dermatitis, sunburn, allergy, bites and stings.
Most rashes get better with self-care but see a doctor if they don’t improve or you feel unwell.
On this page
What are summer skin rashes?
What causes summer skin rashes?
When should I see my doctor?
How are summer skin rashes treated?
What are the complications of summer skin rashes?
Can summer skin rashes be prevented?
Resources and support
Related information on Australian websites
What are summer skin rashes?
Summer skin
rashes
are rashes that often start, or get worse, in
hot
or humid weather or after being in the sun.
They may form red,
itchy
, scaly patches, bumps or
blisters
on parts of your skin exposed to the sun.
Babies are more likely to get
skin rashes
. This is because their skin is thinner, has little or no hair and makes less sweat and oil.
What causes summer skin rashes?
Summer skin rashes happen when things like sunlight, heat or
allergens
irritate
your skin
or trigger your
immune system
to react.
Common causes include:
exposure to sunlight (ultraviolet radiation)
hot or humid weather
sweating a lot
or wearing tight, heavy clothes that trap heat and moisture
medicines that make your skin more sensitive to sunlight
reactions to plant allergens (tiny particles from plants, trees,
grasses
or weeds)
insect bites and stings
sunburn
Common skin problems that can cause summer skin rashes include:
heat rash
(miliaria)
different types of
dermatitis
— such as summer-associated dermatitis, photoallergic
contact dermatitis
and sweat dermatitis
skin conditions
that make you sensitive to sunlight — such as polymorphous light eruption (PMLE)
Some skin conditions may get worse during summer. Skin allergies can also get worse at this time.
CHECK YOUR SYMPTOMS
— Use the
Symptom Checker
and find out if you need to seek medical help.
When should I see my doctor?
See your
doctor
if:
the rash doesn’t improve after a few days in a cool place
the rash covers a large area
the rash keeps coming back
you have signs of skin infection such as redness, warmth, pus or
fever
you are worried about your rash
When to seek urgent care
Seek urgent care if you have a severe allergic reaction (
anaphylaxis
) to bites and stings. This is a medical emergency. Symptoms may include:
difficulty breathing
swelling of the lips, tongue, face and throat
dizziness
or
fainting
nausea
and
vomiting
If you think you or someone you know is experiencing
anaphylaxis
, use the
adrenaline autoinjector
immediately. Then
call triple zero
(000) and ask for an
ambulance
. Follow an
ASCIA allergy action plan
, if you have one.
Follow instructions on
how to use an adrenaline autoinjector
, if required. ASCIA allergy action plans are available for people with various allergies.
Sometimes a rash is a sign of heat-related illness. Heatstroke is the most serious form, when your body overheats and can no longer keep a healthy temperature. Other symptoms may include:
feeling unwell
headache
nausea
confusion
or unusual behaviour (
delirium
)
loss of consciousness (
coma
)
Heatstroke is a medical emergency. Call triple zero (000) and ask for an ambulance if someone has symptoms.
FIND A HEALTH SERVICE
— The
Service Finder
can help you find doctors, pharmacies, hospitals and other health services.
How are summer skin rashes treated?
Treatment for summer skin rashes depends on the cause.
Self-care at home
You may be able to treat some summer skin rashes at home. Try one or more of these measures:
Stay in a cool, ventilated place.
Take cool baths or showers to wash off sweat and bacteria.
Wear loose cotton clothing and avoid tight or synthetic fabrics.
Use a gentle moisturiser.
Read more about
sun safety
and what to do in
hot weather
.
Medicines for summer skin rashes
The best medicine to use for a skin rash depends on the cause. Options may include
antihistamines
or corticosteroid creams.
Ask your
doctor
or
pharmacist
which creams or tablets might help.
If your rash is a side effect of another medicine, talk to your doctor or pharmacist about your options for other treatments.
ASK YOUR DOCTOR
— Preparing for an appointment? Use the
Question Builder
for general tips on what to ask your GP or specialist.
What are the complications of summer skin rashes?
Some rashes may lead to scarring.
Heat rash spots can sometimes get infected and form lumps filled with pus. If the rash covers a large part of the body, it can also cause a fever and make you feel sick from the heat.
Can summer skin rashes be prevented?
You can help prevent some summer skin rashes by:
staying out of the sun if it triggers your rash
keeping away from plants you are allergic to
protecting yourself from insect bites or stings by using repellent
To prevent heatstroke,
drink plenty of water
in hot weather and try to stay in the shade or air conditioning. Read more on
managing heatstroke
.
Resources and support
For more resources on poisons, anaphylaxis and allergies:
Call the
Poisons Information Centre
telephone advice line on
13 11 26
.
The St John Ambulance Australia offers a
first aid fact sheet for severe allergic reactions
.
Australasian Society of Clinical Immunology and Allergy (ASCIA) has information on
setting up a personal action plan
for someone with anaphylaxis.
For more resources on heat-related illnesses:
DermNet has information about
heat rash
.
NSW Health has fact sheets on
heat-related illness and tips to beat the heat
.
For more information on hot weather safety:
The Royal Women’s Hospital has information on
heatwave precautions for babies and young children
.
Australian Red Cross has information on the
risks and potential impacts of extreme heat in your area
.
Queensland Government has information on
hot weather, health and safety
.
The Northern Territory Government has a
video on heat safety
.
You can also call the healthdirect helpline on
1800 022 222
(known as NURSE-ON-CALL in Victoria). A registered nurse is available 24 hours a day, 7 days a week.
Languages other than English
NSW Health has
translated resources on protecting yourself from the heat
.
Information for Aboriginal and/or Torres Strait Islander peoples
Aboriginal Community Controlled Health Organisations (ACCHOs) offer
culturally tailored advice on heat safety and general health
. |
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Medical problem? Call 1800 022 222. If you need urgent medical help, call triple zero immediately
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[beginning of content]()
# Summer skin rashes
*8-minute read*
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**If you or someone near you has heatstroke, call triple zero (000) immediately and ask for an ambulance. If you think you or someone you know is experiencing anaphylaxis, use the adrenaline autoinjector immediately. Then call triple zero (000) and ask for an ambulance. Follow an ASCIA allergy action plan, if you have one.**
## Key facts
- Summer skin rashes may happen in hot, humid weather or after sun exposure.
- They may look like red, itchy patches, bumps or blisters.
- Babies are more likely to get rashes because their skin is thinner and makes less sweat and oil.
- Common causes include heat rash, dermatitis, sunburn, allergy, bites and stings.
- Most rashes get better with self-care but see a doctor if they don’t improve or you feel unwell.
## On this page
- [What are summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#what-are)
- [What causes summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#causes)
- [When should I see my doctor?](https://www.healthdirect.gov.au/summer-skin-rashes#doctor)
- [How are summer skin rashes treated?](https://www.healthdirect.gov.au/summer-skin-rashes#treated)
- [What are the complications of summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#complications)
- [Can summer skin rashes be prevented?](https://www.healthdirect.gov.au/summer-skin-rashes#prevented)
- [Resources and support](https://www.healthdirect.gov.au/summer-skin-rashes#resources)
- [Related information on Australian websites](https://www.healthdirect.gov.au/summer-skin-rashes#searchGeneralResults)
## What are summer skin rashes?
Summer skin [rashes](https://www.healthdirect.gov.au/rashes) are rashes that often start, or get worse, in [hot](https://www.healthdirect.gov.au/hot-weather-risks-and-staying-cool) or humid weather or after being in the sun.
They may form red, [itchy](https://www.healthdirect.gov.au/itchy-skin), scaly patches, bumps or [blisters](https://www.healthdirect.gov.au/blisters) on parts of your skin exposed to the sun.
Babies are more likely to get [skin rashes](https://www.pregnancybirthbaby.org.au/common-childhood-rashes). This is because their skin is thinner, has little or no hair and makes less sweat and oil.
## What causes summer skin rashes?
Summer skin rashes happen when things like sunlight, heat or [allergens](https://www.healthdirect.gov.au/allergies-and-hypersensitivities) irritate [your skin](https://www.healthdirect.gov.au/skin) or trigger your [immune system](https://www.healthdirect.gov.au/immune-system) to react.
Common causes include:
- exposure to sunlight (ultraviolet radiation)
- hot or humid weather
- [sweating a lot](https://www.healthdirect.gov.au/excessive-sweating-hyperhidrosis) or wearing tight, heavy clothes that trap heat and moisture
- medicines that make your skin more sensitive to sunlight
- reactions to plant allergens (tiny particles from plants, trees, [grasses](https://www.healthdirect.gov.au/grass-allergy) or weeds)
- [insect bites and stings](https://www.healthdirect.gov.au/insect-bites-and-stings)
- [sunburn](https://www.healthdirect.gov.au/sunburn)
Common skin problems that can cause summer skin rashes include:
- [heat rash](https://www.healthdirect.gov.au/heat-rash) (miliaria)
- different types of [dermatitis](https://www.healthdirect.gov.au/dermatitis) — such as summer-associated dermatitis, photoallergic [contact dermatitis](https://www.healthdirect.gov.au/contact-dermatitis) and sweat dermatitis
- [skin conditions](https://www.healthdirect.gov.au/skin-conditions) that make you sensitive to sunlight — such as polymorphous light eruption (PMLE)
Some skin conditions may get worse during summer. Skin allergies can also get worse at this time.
[**CHECK YOUR SYMPTOMS** — Use the **Symptom Checker** and find out if you need to seek medical help.](https://www.healthdirect.gov.au/symptom-checker)
## When should I see my doctor?
See your [doctor](https://www.healthdirect.gov.au/the-role-of-a-gp) if:
- the rash doesn’t improve after a few days in a cool place
- the rash covers a large area
- the rash keeps coming back
- you have signs of skin infection such as redness, warmth, pus or [fever](https://www.healthdirect.gov.au/fever)
- you are worried about your rash
### When to seek urgent care
Seek urgent care if you have a severe allergic reaction ([anaphylaxis](https://www.healthdirect.gov.au/anaphylaxis)) to bites and stings. This is a medical emergency. Symptoms may include:
- [difficulty breathing](https://www.healthdirect.gov.au/shortness-of-breath)
- swelling of the lips, tongue, face and throat
- [dizziness](https://www.healthdirect.gov.au/dizziness) or [fainting](https://www.healthdirect.gov.au/fainting)
- [nausea](https://www.healthdirect.gov.au/nausea) and [vomiting](https://www.healthdirect.gov.au/vomiting)
**If you think you or someone you know is experiencing [anaphylaxis](https://www.healthdirect.gov.au/anaphylaxis), use the [adrenaline autoinjector](https://www.healthdirect.gov.au/how-to-use-an-adrenaline-autoinjector-epipen-anapen) immediately. Then [call triple zero](https://www.healthdirect.gov.au/calling-triple-zero) (000) and ask for an [ambulance](https://www.healthdirect.gov.au/about-ambulances-in-australia). Follow an [ASCIA allergy action plan](https://www.allergy.org.au/hp/anaphylaxis/ascia-action-plan-for-anaphylaxis), if you have one.**
Follow instructions on [how to use an adrenaline autoinjector](https://www.healthdirect.gov.au/how-to-use-an-adrenaline-autoinjector-epipen-anapen), if required. ASCIA allergy action plans are available for people with various allergies.
Sometimes a rash is a sign of heat-related illness. Heatstroke is the most serious form, when your body overheats and can no longer keep a healthy temperature. Other symptoms may include:
- feeling unwell
- [headache](https://www.healthdirect.gov.au/headaches)
- nausea
- [confusion](https://www.healthdirect.gov.au/confusion) or unusual behaviour ([delirium](https://www.healthdirect.gov.au/delirium))
- loss of consciousness ([coma](https://www.healthdirect.gov.au/coma))
**Heatstroke is a medical emergency. Call triple zero (000) and ask for an ambulance if someone has symptoms.**
[**FIND A HEALTH SERVICE** — The **Service Finder** can help you find doctors, pharmacies, hospitals and other health services.](https://www.healthdirect.gov.au/australian-health-services)
## How are summer skin rashes treated?
Treatment for summer skin rashes depends on the cause.
### Self-care at home
You may be able to treat some summer skin rashes at home. Try one or more of these measures:
- Stay in a cool, ventilated place.
- Take cool baths or showers to wash off sweat and bacteria.
- Wear loose cotton clothing and avoid tight or synthetic fabrics.
- Use a gentle moisturiser.
Read more about [sun safety](https://www.healthdirect.gov.au/sunburn) and what to do in [hot weather](https://www.healthdirect.gov.au/hot-weather-risks-and-staying-cool).
### Medicines for summer skin rashes
The best medicine to use for a skin rash depends on the cause. Options may include [antihistamines](https://www.healthdirect.gov.au/antihistamines) or corticosteroid creams.
Ask your [doctor](https://www.healthdirect.gov.au/the-role-of-a-gp) or [pharmacist](https://www.healthdirect.gov.au/getting-the-most-out-of-your-pharmacist) which creams or tablets might help.
If your rash is a side effect of another medicine, talk to your doctor or pharmacist about your options for other treatments.
[**ASK YOUR DOCTOR** — Preparing for an appointment? Use the **Question Builder** for general tips on what to ask your GP or specialist.](https://www.healthdirect.gov.au/question-builder)
## What are the complications of summer skin rashes?
Some rashes may lead to scarring.
Heat rash spots can sometimes get infected and form lumps filled with pus. If the rash covers a large part of the body, it can also cause a fever and make you feel sick from the heat.
## Can summer skin rashes be prevented?
You can help prevent some summer skin rashes by:
- staying out of the sun if it triggers your rash
- keeping away from plants you are allergic to
- protecting yourself from insect bites or stings by using repellent
To prevent heatstroke, [drink plenty of water](https://www.healthdirect.gov.au/drinking-water-and-your-health) in hot weather and try to stay in the shade or air conditioning. Read more on [managing heatstroke](https://www.healthdirect.gov.au/heatstroke#assist).
## Resources and support
For more resources on poisons, anaphylaxis and allergies:
- Call the [Poisons Information Centre](https://www.health.gov.au/contacts/poisons-information-centre) telephone advice line on [13 11 26](tel:131126).
- The St John Ambulance Australia offers a [first aid fact sheet for severe allergic reactions](https://stjohn.org.au/assets/uploads/fact%20sheets/english/Fact%20sheets_anaphylaxis_anapen.pdf).
- Australasian Society of Clinical Immunology and Allergy (ASCIA) has information on [setting up a personal action plan](https://allergy.org.au/hp/anaphylaxis/ascia-action-plan-for-anaphylaxis) for someone with anaphylaxis.
For more resources on heat-related illnesses:
- DermNet has information about [heat rash](https://dermnetnz.org/topics/miliaria).
- NSW Health has fact sheets on [heat-related illness and tips to beat the heat](https://www.health.nsw.gov.au/environment/factsheets/Pages/beat-the-heat.aspx).
For more information on hot weather safety:
- The Royal Women’s Hospital has information on [heatwave precautions for babies and young children](https://www.thewomens.org.au/health-information/at-home-with-your-baby/heatwave-precautions-for-babies-young-children).
- Australian Red Cross has information on the [risks and potential impacts of extreme heat in your area](https://www.redcross.org.au/extremeheat/).
- Queensland Government has information on [hot weather, health and safety](https://www.qld.gov.au/health/staying-healthy/environmental/heatsafe).
- The Northern Territory Government has a [video on heat safety](https://nt.gov.au/parks/safety-rules/beat-the-heat).
You can also call the healthdirect helpline on [1800 022 222](tel:1800022222) (known as NURSE-ON-CALL in Victoria). A registered nurse is available 24 hours a day, 7 days a week.
### Languages other than English
NSW Health has [translated resources on protecting yourself from the heat](https://www.health.nsw.gov.au/environment/beattheheat/Pages/translations.aspx).
### Information for Aboriginal and/or Torres Strait Islander peoples
Aboriginal Community Controlled Health Organisations (ACCHOs) offer [culturally tailored advice on heat safety and general health](https://www.vaccho.org.au/environmental-health-hazards/).
#### Sources:
Indian Journal of Dermatology *[(Summer-Associated Dermatitis: A Cross-Sectional Study of a Unique Eczematous Dermatosis in South India)](https://pmc.ncbi.nlm.nih.gov/articles/PMC6440175/ "Summer-Associated Dermatitis: A Cross-Sectional Study of a Unique Eczematous Dermatosis in South India")*, Frontiers in Medicine *[(Summer and spring elbow rashes is a variant of polymorphous light eruption: confirmation by photoprovocation and histopathology in a series of five cases)](https://pmc.ncbi.nlm.nih.gov/articles/PMC10625400/ "Summer and spring elbow rashes is a variant of polymorphous light eruption: confirmation by photoprovocation and histopathology in a series of five cases")*, Collegium Antropologicum *[(Allergic hypersensitivity skin reactions following sun exposure)](https://pubmed.ncbi.nlm.nih.gov/19138019/ "Allergic hypersensitivity skin reactions following sun exposure")*, BMJ Best Practice *[(Miliaria)](https://bestpractice.bmj.com/topics/en-gb/614/pdf/614/Miliaria.pdf "Miliaria")*, JMIR Dermatology *[(Hell’s Itch: A Unique Reaction to UV Exposure)](https://pmc.ncbi.nlm.nih.gov/articles/PMC10630859/ "Hell’s Itch: A Unique Reaction to UV Exposure")*, Indian Dermatology Online Journal *[(Atypical Presentation of Sweat Dermatitis with Review of Literature)](https://pmc.ncbi.nlm.nih.gov/articles/PMC6859762 "Atypical Presentation of Sweat Dermatitis with Review of Literature")*, Environmental Research *[(Effects of high temperature on existing allergic symptoms and the effect modification of allergic history on health outcomes during hot days among adults: An exploratory cross-sectional telephone survey study)](https://pubmed.ncbi.nlm.nih.gov/31125717/ "Effects of high temperature on existing allergic symptoms and the effect modification of allergic history on health outcomes during hot days among adults: An exploratory cross-sectional telephone survey study")*, Frontiers in Immunology *[(Update on mosquito bite reaction: Itch and hypersensitivity, pathophysiology, prevention, and treatment)](https://pmc.ncbi.nlm.nih.gov/articles/PMC9532860/ "Update on mosquito bite reaction: Itch and hypersensitivity, pathophysiology, prevention, and treatment")*, Maedica *[(Newborn Skin: Common Skin Problems)](https://pmc.ncbi.nlm.nih.gov/articles/PMC5574071/ "Newborn Skin: Common Skin Problems")*, American Journal of Clinical Dermatology *[(Photosensitivity disorders: cause, effect and management)](https://pubmed.ncbi.nlm.nih.gov/12010069/ "Photosensitivity disorders: cause, effect and management")*, American Family Physician *[(Management of heatstroke and heat exhaustion)](https://pubmed.ncbi.nlm.nih.gov/15952443/ "Management of heatstroke and heat exhaustion")*, The Australasian College of Dermatologists *[(Miliaria)](https://www.dermcoll.edu.au/atoz/miliaria/ "Miliaria")*
Learn more here about the [development and quality assurance of healthdirect content](https://www.healthdirect.gov.au/about-our-content).
Last reviewed: September 2025
[Back To Top](https://www.healthdirect.gov.au/summer-skin-rashes#backToTop)
## Related pages
- [Heat rash](https://www.healthdirect.gov.au/heat-rash "Heat rash")
## Search our site for
- [Hot weather](https://www.healthdirect.gov.au/search-results/Hot%20weather "Search results for: Hot weather")
- [Rash](https://www.healthdirect.gov.au/search-results/Rash "Search results for: Rash")
- [Itching](https://www.healthdirect.gov.au/search-results/Itching "Search results for: Itching")
## Need more information?
These trusted information partners have more on this topic.
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[Sun and heat protection for babies and kids Babies and kids can easily get sunburnt, even if it's cool or overcast. Read on to learn how to protect your child from heat, dehydration and sunburn. *Read more on Pregnancy,Birth & Baby website* ](https://www.pregnancybirthbaby.org.au/sun-protection-for-babies-and-kids)
[Heat rash or prickly heat - myDr.com.au Heat rash or prickly heat is caused by blockage of sweat glands during times of high heat or humidity, causing itching or prickling of the skin. *Read more on myDoctor website* ](https://mydr.com.au/skin-hair/heat-rash-or-prickly-heat/)
[Heat rash or prickly heat \| Raising Children Network Heat rash (prickly heat or miliaria) is little spots on the skin. It might appear if your child overheats. Prevent and treat by keeping your child cool. *Read more on raisingchildren.net.au website* ](https://raisingchildren.net.au/guides/a-z-health-reference/heat-rash)
[Nappy Rash \| What Is Nappy Rash \| Tresillian A common ailment for babies is nappy rash. Learn what it is, what causes nappy rash and how to treat it If the rash won't go away, seek professional advice *Read more on Tresillian website* ](https://www.tresillian.org.au/baby/health/nappy-rash/)
[Heat stroke and heat exhaustion - myDr.com.au When your body can't keep itself cool you can develop heat illnesses, ranging from heat cramps to heat exhaustion and, most serious of all, heat stroke. *Read more on myDoctor website* ](https://mydr.com.au/summer-health/heat-stroke-and-heat-exhaustion/)
[Heat stress \| NT.GOV.AU Avoiding heat stress, people at risk, minor and major conditions and prevention *Read more on NT Health website* ](https://nt.gov.au/wellbeing/health-conditions-treatments/heat-stress)
[Rash fact sheet \| NHMRC Urgent medical attention is needed if a child has a rash of flat spots that do not whiten if you press on them. The spots can be very small or quite large, and are coloured red or purple. These rashes are caused by burst blood vessels under the skin. They may indicate a serious infection such as meningococcal disease. *Read more on NHMRC website* ](https://www.nhmrc.gov.au/about-us/publications/staying-healthy-guidelines/fact-sheets/rash)
[Heat stress and heat stroke \| National Centre for Farmer Health Heat stress is one of the biggest health risks associated with heat waves. There are three stages of heat stress: heat cramps, heat exhaustion and heat stroke. Read more... *Read more on National Centre for Farmer Health website* ](https://farmerhealth.org.au/2017/03/20/heat-stress-and-heat-stroke)
[Heat exhaustion and heatstroke When children are out in hot, humid conditions for extended periods of time, they are at risk of heat-related illnesses. *Read more on Sydney Children's Hospitals Network website* ](https://www.schn.health.nsw.gov.au/kids-health-hub/kids-seasonal-health-alerts/summer-heat-safety-kids)
[Heat exhaustion and heatstroke When children are out in hot, humid conditions for extended periods of time, they are at risk of heat-related illnesses. *Read more on Sydney Children's Hospitals Network website* ](https://www.schn.health.nsw.gov.au/kids-health-hub/safety-and-injury-prevention/hot-weather-and-sun/heat-exhaustion-and-heatstroke)
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[Focus on Skin Cancer: An Overview The start of summer in Australia is an important time for nurses to turn their focus to the skin. Australia has one of the highest skin cancer rates worldwide, with the Cancer Council Australia forecasting that at least two out of three Australians will be diagnosed with skin cancer in their lifetime. Luckily, skin cancer is visible, mostly preventable and curable when detected and treated early. *Read more on Ausmed Education website* ](https://www.ausmed.com/learn/articles/focus-on-skin-cancer-overview)
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| Readable Markdown | ## Key facts
- Summer skin rashes may happen in hot, humid weather or after sun exposure.
- They may look like red, itchy patches, bumps or blisters.
- Babies are more likely to get rashes because their skin is thinner and makes less sweat and oil.
- Common causes include heat rash, dermatitis, sunburn, allergy, bites and stings.
- Most rashes get better with self-care but see a doctor if they don’t improve or you feel unwell.
## On this page
- [What are summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#what-are)
- [What causes summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#causes)
- [When should I see my doctor?](https://www.healthdirect.gov.au/summer-skin-rashes#doctor)
- [How are summer skin rashes treated?](https://www.healthdirect.gov.au/summer-skin-rashes#treated)
- [What are the complications of summer skin rashes?](https://www.healthdirect.gov.au/summer-skin-rashes#complications)
- [Can summer skin rashes be prevented?](https://www.healthdirect.gov.au/summer-skin-rashes#prevented)
- [Resources and support](https://www.healthdirect.gov.au/summer-skin-rashes#resources)
- [Related information on Australian websites](https://www.healthdirect.gov.au/summer-skin-rashes#searchGeneralResults)
## What are summer skin rashes?
Summer skin [rashes](https://www.healthdirect.gov.au/rashes) are rashes that often start, or get worse, in [hot](https://www.healthdirect.gov.au/hot-weather-risks-and-staying-cool) or humid weather or after being in the sun.
They may form red, [itchy](https://www.healthdirect.gov.au/itchy-skin), scaly patches, bumps or [blisters](https://www.healthdirect.gov.au/blisters) on parts of your skin exposed to the sun.
Babies are more likely to get [skin rashes](https://www.pregnancybirthbaby.org.au/common-childhood-rashes). This is because their skin is thinner, has little or no hair and makes less sweat and oil.
## What causes summer skin rashes?
Summer skin rashes happen when things like sunlight, heat or [allergens](https://www.healthdirect.gov.au/allergies-and-hypersensitivities) irritate [your skin](https://www.healthdirect.gov.au/skin) or trigger your [immune system](https://www.healthdirect.gov.au/immune-system) to react.
Common causes include:
- exposure to sunlight (ultraviolet radiation)
- hot or humid weather
- [sweating a lot](https://www.healthdirect.gov.au/excessive-sweating-hyperhidrosis) or wearing tight, heavy clothes that trap heat and moisture
- medicines that make your skin more sensitive to sunlight
- reactions to plant allergens (tiny particles from plants, trees, [grasses](https://www.healthdirect.gov.au/grass-allergy) or weeds)
- [insect bites and stings](https://www.healthdirect.gov.au/insect-bites-and-stings)
- [sunburn](https://www.healthdirect.gov.au/sunburn)
Common skin problems that can cause summer skin rashes include:
- [heat rash](https://www.healthdirect.gov.au/heat-rash) (miliaria)
- different types of [dermatitis](https://www.healthdirect.gov.au/dermatitis) — such as summer-associated dermatitis, photoallergic [contact dermatitis](https://www.healthdirect.gov.au/contact-dermatitis) and sweat dermatitis
- [skin conditions](https://www.healthdirect.gov.au/skin-conditions) that make you sensitive to sunlight — such as polymorphous light eruption (PMLE)
Some skin conditions may get worse during summer. Skin allergies can also get worse at this time.
[**CHECK YOUR SYMPTOMS** — Use the **Symptom Checker** and find out if you need to seek medical help.](https://www.healthdirect.gov.au/symptom-checker)
## When should I see my doctor?
See your [doctor](https://www.healthdirect.gov.au/the-role-of-a-gp) if:
- the rash doesn’t improve after a few days in a cool place
- the rash covers a large area
- the rash keeps coming back
- you have signs of skin infection such as redness, warmth, pus or [fever](https://www.healthdirect.gov.au/fever)
- you are worried about your rash
### When to seek urgent care
Seek urgent care if you have a severe allergic reaction ([anaphylaxis](https://www.healthdirect.gov.au/anaphylaxis)) to bites and stings. This is a medical emergency. Symptoms may include:
- [difficulty breathing](https://www.healthdirect.gov.au/shortness-of-breath)
- swelling of the lips, tongue, face and throat
- [dizziness](https://www.healthdirect.gov.au/dizziness) or [fainting](https://www.healthdirect.gov.au/fainting)
- [nausea](https://www.healthdirect.gov.au/nausea) and [vomiting](https://www.healthdirect.gov.au/vomiting)
**If you think you or someone you know is experiencing [anaphylaxis](https://www.healthdirect.gov.au/anaphylaxis), use the [adrenaline autoinjector](https://www.healthdirect.gov.au/how-to-use-an-adrenaline-autoinjector-epipen-anapen) immediately. Then [call triple zero](https://www.healthdirect.gov.au/calling-triple-zero) (000) and ask for an [ambulance](https://www.healthdirect.gov.au/about-ambulances-in-australia). Follow an [ASCIA allergy action plan](https://www.allergy.org.au/hp/anaphylaxis/ascia-action-plan-for-anaphylaxis), if you have one.**
Follow instructions on [how to use an adrenaline autoinjector](https://www.healthdirect.gov.au/how-to-use-an-adrenaline-autoinjector-epipen-anapen), if required. ASCIA allergy action plans are available for people with various allergies.
Sometimes a rash is a sign of heat-related illness. Heatstroke is the most serious form, when your body overheats and can no longer keep a healthy temperature. Other symptoms may include:
- feeling unwell
- [headache](https://www.healthdirect.gov.au/headaches)
- nausea
- [confusion](https://www.healthdirect.gov.au/confusion) or unusual behaviour ([delirium](https://www.healthdirect.gov.au/delirium))
- loss of consciousness ([coma](https://www.healthdirect.gov.au/coma))
**Heatstroke is a medical emergency. Call triple zero (000) and ask for an ambulance if someone has symptoms.**
[**FIND A HEALTH SERVICE** — The **Service Finder** can help you find doctors, pharmacies, hospitals and other health services.](https://www.healthdirect.gov.au/australian-health-services)
## How are summer skin rashes treated?
Treatment for summer skin rashes depends on the cause.
### Self-care at home
You may be able to treat some summer skin rashes at home. Try one or more of these measures:
- Stay in a cool, ventilated place.
- Take cool baths or showers to wash off sweat and bacteria.
- Wear loose cotton clothing and avoid tight or synthetic fabrics.
- Use a gentle moisturiser.
Read more about [sun safety](https://www.healthdirect.gov.au/sunburn) and what to do in [hot weather](https://www.healthdirect.gov.au/hot-weather-risks-and-staying-cool).
### Medicines for summer skin rashes
The best medicine to use for a skin rash depends on the cause. Options may include [antihistamines](https://www.healthdirect.gov.au/antihistamines) or corticosteroid creams.
Ask your [doctor](https://www.healthdirect.gov.au/the-role-of-a-gp) or [pharmacist](https://www.healthdirect.gov.au/getting-the-most-out-of-your-pharmacist) which creams or tablets might help.
If your rash is a side effect of another medicine, talk to your doctor or pharmacist about your options for other treatments.
[**ASK YOUR DOCTOR** — Preparing for an appointment? Use the **Question Builder** for general tips on what to ask your GP or specialist.](https://www.healthdirect.gov.au/question-builder)
## What are the complications of summer skin rashes?
Some rashes may lead to scarring.
Heat rash spots can sometimes get infected and form lumps filled with pus. If the rash covers a large part of the body, it can also cause a fever and make you feel sick from the heat.
## Can summer skin rashes be prevented?
You can help prevent some summer skin rashes by:
- staying out of the sun if it triggers your rash
- keeping away from plants you are allergic to
- protecting yourself from insect bites or stings by using repellent
To prevent heatstroke, [drink plenty of water](https://www.healthdirect.gov.au/drinking-water-and-your-health) in hot weather and try to stay in the shade or air conditioning. Read more on [managing heatstroke](https://www.healthdirect.gov.au/heatstroke#assist).
## Resources and support
For more resources on poisons, anaphylaxis and allergies:
- Call the [Poisons Information Centre](https://www.health.gov.au/contacts/poisons-information-centre) telephone advice line on [13 11 26](tel:131126).
- The St John Ambulance Australia offers a [first aid fact sheet for severe allergic reactions](https://stjohn.org.au/assets/uploads/fact%20sheets/english/Fact%20sheets_anaphylaxis_anapen.pdf).
- Australasian Society of Clinical Immunology and Allergy (ASCIA) has information on [setting up a personal action plan](https://allergy.org.au/hp/anaphylaxis/ascia-action-plan-for-anaphylaxis) for someone with anaphylaxis.
For more resources on heat-related illnesses:
- DermNet has information about [heat rash](https://dermnetnz.org/topics/miliaria).
- NSW Health has fact sheets on [heat-related illness and tips to beat the heat](https://www.health.nsw.gov.au/environment/factsheets/Pages/beat-the-heat.aspx).
For more information on hot weather safety:
- The Royal Women’s Hospital has information on [heatwave precautions for babies and young children](https://www.thewomens.org.au/health-information/at-home-with-your-baby/heatwave-precautions-for-babies-young-children).
- Australian Red Cross has information on the [risks and potential impacts of extreme heat in your area](https://www.redcross.org.au/extremeheat/).
- Queensland Government has information on [hot weather, health and safety](https://www.qld.gov.au/health/staying-healthy/environmental/heatsafe).
- The Northern Territory Government has a [video on heat safety](https://nt.gov.au/parks/safety-rules/beat-the-heat).
You can also call the healthdirect helpline on [1800 022 222](tel:1800022222) (known as NURSE-ON-CALL in Victoria). A registered nurse is available 24 hours a day, 7 days a week.
### Languages other than English
NSW Health has [translated resources on protecting yourself from the heat](https://www.health.nsw.gov.au/environment/beattheheat/Pages/translations.aspx).
### Information for Aboriginal and/or Torres Strait Islander peoples
Aboriginal Community Controlled Health Organisations (ACCHOs) offer [culturally tailored advice on heat safety and general health](https://www.vaccho.org.au/environmental-health-hazards/). |
| Shard | 187 (laksa) |
| Root Hash | 11476440364350543187 |
| Unparsed URL | au,gov,healthdirect!www,/summer-skin-rashes s443 |