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   What causes sun rash?

   • Medically, sun rash is described as a type 4 delayed hypersensitivity immunological reaction. During this reaction, the T cell does not function properly, which causes a decrease in the normal immune suppression in the skin caused by ultraviolet (UV) light. This then creates an inflammatory response.

   Sun Rash: What It Looks Like, Symptoms, Causes, Treatment - Verywell …

   www.verywellhealth.com/sun-rash-7501618

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   What is a sun allergy rash?

   • A sun allergy is a condition that causes a rash after a person is exposed to sunlight. There are several types of sun allergies, and reactions can range from mild to severe. The most effective treatment strategy is to avoid the sun or cover your skin, but other treatments may help. What is a sun allergy?

   Sun Allergy: Symptoms, Causes, Treatment & Prevention - Cleveland Cli…

   my.clevelandclinic.org/health/diseases/17681-sun-allergy

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   When does sun rash appear?

   • Sun rash typically appears several hours or days after sun exposure. It can develop anywhere on the body that’s exposed to sunlight. Some kinds of sun rash occur on skin that’s usually covered in the fall and winter, such as your chest or arms. Characteristics of the rash can vary between people depending on skin type, but they can include:

   Sun Rash: Poisoning, Allergy, Treatment, Causes, Pictures, and More

   www.healthline.com/health/sun-rash

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2. www.verywellhealth.com › sun-rash-7501618Sun Rash: What It Looks Like, Symptoms, Causes, Treatment

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   Jul 27, 2023 · Sun rash is a red, itchy rash that appears on the skin due to sunlight exposure. Learn how to identify, treat, and prevent this autoimmune condition that affects people in spring and fall.

3. www.mayoclinic.org › diseases-conditionsPolymorphous light eruption - Symptoms & causes - Mayo Clinic

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   Polymorphous light eruption on arm

   The rash that results from polymorphous light eruption can look different from person to person but typically includes inflammation, itching and small bumps that may be densely packed together. People may rarely have other symptoms such as fever and chills. In polymorphous light eruption, eruption refers to the rash, which usually appears 30 minutes to several hours after sun exposure. The rash usually appears on areas of the body that are covered during winter but exposed in summer such as the upper chest, front of the neck and arms.

   When to see a health care provider

   See your health care provider if you have any rash with no obvious cause, such as a known allergy or recent contact with poison ivy. Polymorphous light eruption rashes look similar to rashes caused by other diseases, some of which are serious. So it's important to get a prompt diagnosis and treatment. Seek immediate medical care if your rash is:

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   The exact cause of polymorphous light eruption isn't understood. The rash appears in people who have developed sensitivity to sunlight, especially ultraviolet (UV) radiation from the sun or other sources, such as tanning beds. This is called photosensitivity. It leads to immune system activity that causes a rash.

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   Anyone can develop polymorphous light eruption, but several factors are associated with an increased risk of the condition:

   •Being female

   •Having skin that sunburns easily

   •Living in northern regions

   •Having a family history of the condition

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   •Polymorphic light eruption

   •Polymorphous light eruption on arm

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   Polymorphous light eruption is a rash caused by sun exposure in people who have developed sensitivity to sunlight. Learn about the symptoms, causes, risk factors and treatment options for this condition.

   See full list on mayoclinic.org

4. www.healthline.com › health › sun-rashSun Rash: Poisoning, Allergy, Treatment, Causes, Pictures ...

   www.healthline.com › health › sun-rash

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   Oct 24, 2018 · Sun rash is a type of photodermatosis, where exposure to sunlight causes a reaction on your skin. Learn how to recognize, treat, and prevent sun rash, and when to contact a doctor.

5. www.mayoclinic.org › diseases-conditions › sunSun allergy - Symptoms and causes - Mayo Clinic

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   Aug 20, 2022 · Sun allergy is a term for several conditions that cause an itchy rash on the skin after sun exposure. Learn about the types, triggers, prevention and treatment of sun allergy from Mayo Clinic experts.

6. www.health.com › sun-rash-8620019Sun Rash: Types, Symptoms, Causes, Treatment - Health

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   Apr 10, 2024 · Sun rash is a skin reaction to sunlight that causes red, itchy bumps or blisters. Learn about the most common type (PMLE), diagnosis, treatment, and prevention tips.

7. www.medicalnewstoday.com › articles › sun-rashSun rash: What it is, symptoms, causes, and treatments

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   Jul 29, 2022 · Sun rash is a skin reaction due to sun exposure that causes irritation but does not usually result in serious complications. Learn about the types, causes, symptoms, and treatments of sun rash, and how to prevent it with sun protection.

8. my.clevelandclinic.org › health › diseasesSun Allergy: Symptoms, Causes, Treatment & Prevention

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   Sun allergy is a condition that causes a rash after exposure to sunlight. Learn about the different types, diagnosis, treatment and prevention of sun allergy from Cleveland Clinic.