What is it?

Acute dermatitis due to solar radiation, also known as solar dermatitis or sun allergy, refers to several conditions that cause an itchy rash to form on the skin after being in sunlight or other sources of ultraviolet (UV) radiation.

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Acute dermatitis due to solar radiation.

Additional names

This group contains additional names:
- Polymorphic Light Eruption
- Solar dermatitis
- Sun allergy

Signs & symptoms

Some of the symptoms for solar dermatitis include:
- Redness
- Itchiness
- Stinging sensation
- Tiny bumps that may merge into raised patches
- Blisters


Several tests may be used by your healthcare provider to confirm your diagnosis:
- Light testing - this exam uses Ultraviolet (UV) radiation to see how your skin reacts to it.
- Photo-patch testing - this test shows whether a substance applied to your skin before you go into the sun (such as a watch strap) is the cause to your sun allergy.


Treatment for solar dermatitis may include medications such as steroidal creams or in severe cases, steroidal pills. Plaquenil, a drug used to treat malaria, may be the choice of therapy in some types of sun allergy.
Phototherapy - your healthcare provider may suggest to treat your sun allergy by gradually exposing your sun to UV radiation.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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