Photodermatitis

Photo-dermatitis is an abnormal skin reaction to sunlight, or more specifically to ultraviolet (UV) rays. It can be acute (sudden) or chronic (ongoing).

CAUSES—

  1. Reaction of immune system to UV rays
  2.  Fragrances
  3. Sunscreens with PABA
  4. Industrial cleaners that contain salicylanilide
  5. Chemicals found in medicines
  6. Antibiotics( tetracycline and sulfonamides)
  7. Antifungals(griseofulvin)
  8. Coal tar derivatives and psoralens, used topically for psoriasis
  9. Retinoids( tretinoin )and medications containing retinoic acid, used for acne
  10. Nonsteroidal anti-inflammatory drugs (NSAIDs)
  11. Chemotherapy agents
  12. Sulfonylureas, oral medications used for diabetes
  13. Antimalarial drugs(quinine)
  14. Diuretics
  15. Antidepressants(tricyclics)
  16. Anti-psychotics(phenothiazines)
  17. Anti-anxiety medications( benzodiazepines)
  18. Chemicals in cosmetics and foods 

 SYMPTOMS—

Itchy, scaly, blistery, reddening of the skin

Prevention

  • Limit skin exposure to sun, especially intense midday sun.
  • Use PABA-free sunscreens that protect against UVA and have a sun protection factor (SPF) of 30 – 50.
  • Cover up with a long-sleeved shirt, long pants, and a wide-brimmed hat.
  • Beware of using any product that causes sun sensitivity .

TREATMENT-

  1. Cool, wet dressings.
  2. Phototherapy
  3.  Medicines
  4. Multivitamins

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