SUN ALLERGY - Watsons Health
SUN ALLERGY - WatsonsHealth


Sun Allergy is a condition which result to the skin’s exposure to sunlight. It  occurs on skin as red rashes that is oftenly itchy. Polymorphic light or sun poisoning is the most common form of sun allergy.

The cause of sun allergy may be hereditary or triggered by other factors such as medications or exposure to certain plants like limes and wild parsnip.

Signs and symptoms usually occur only on skin that has been exposed to the sun. It typically develop within minutes to hours after sun exposure and may include:

  • Redness
  • Itching or pain
  • Tiny Bumps that may merge into raised patches
  • Scaling, crusting or bleeding
  • Blisters or hives


To rule out other conditions with the same symptoms, you may undergo different tests such as:

  • Ultraviolet (UV) Light Testing – In this test, the skin will be exposing to different wavelengths of UV lights. This will help determine which particular type causes reaction to the skin.
  • Photopatch Testing – This test will help determine if your sun allergy is triggered by a sensitizing substance you use before you go into the sun.
  • Blood Tests and Skin Samples – These tests are usually recommended if the doctor suspects that the cause of your sun allergy is another health problem.



Treatment may vary on the cause of your sun allergy. For mild cases, limiting sun exposure may help the rashes resolve on its own. Some other treatments may include:

  • Medications – Creams containing corticosteroids are available to treat symptoms. Prednisone may be recommended to treat a severe skin allergic reaction.
  • Therapy – Phototherapy may gradually help your skin get used to sunlight. A special lamp is used to shine ultraviolet light on specific areas.
  • Home Remedies – Home remedies that may help include calamine lotion and aloe vera.



Some preventive methods to help avoid occurrence of sun allergy are:

  • Limiting Sun Exposure
  • Wearing Protective Glasses and Clothing
  • Applying Sunscreen

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