Photodermatitis is a reaction of the skin to UV rays of the sun. It may be caused by a medication that makes the skin more sensitive, a skin product (ie sunscreen containing PABA, certain fragrances), or a vitamin deficiency. Doctors can determine the presence of the disorder through a photo test.
Causes
Many medications cause sun sensitivity.
Causes of photoallergy may include:
- psoralens , coal tars, photo-active dyes (eosin, acridine orange )
- musk ambrette , methylcoumarin , lemon oil (may be present in fragrances)
- PABA (found in sunscreens)
- salicylanilide (found in industrial cleaners)
Symptoms
May result in a red, painful or itchy rash.
Prevention
Prevention includes avoiding contact with the sun:
- Stay inside during the brightest hours of the day, from 12-3.
- Cover up: wear long sleeves, pants, and a wide brimmed hat whenever harsh exposure is probable. Remember that a cloud cover does not afford protection from UV rays.
- Avoid chemicals that may trigger a reaction (do not, however, stop taking medication without consulting a doctor)
- If the symptoms are severe, see a doctor.
Foods
The following foods may also help.
- Beta Carotene - found in carrots, not proven to be effective
- Omega-3 Fatty Acids - found in fish and peanuts
- Protein- will especially help individuals whose malnutrition may be a contributing factor.
- Vitamin B3, C, D, and E
- Green tea- antioxidants
- Calendula
