Topical azelaic acid is used in -: (A) Hyperpigmentary disorders, (B) Dermatophvte infections, (C) Vitiligo, (D) Mixed infections
Answer is A. Topical azelic acid is used in treatment of melasma a hyper pigmentation disorder. azeliac acid is a competitive tyrosinase inhibitor that inhibit the synthesis of melanin. It is used as 10-20% cream and is as efficacious as hydroquinone. IADVL textbook of dermatology , pigmentary disorders page 750