All the following drugs are effective in the treatment of Pityriasis Versicolor except:: (A) Selenium Sulphide, (B) Ketoconazole, (C) Griseofulvin, (D) Clotrimazole
Answer is C. Griseofulvin has no role in treatment of tinea versicolor. Griseofulvin is used systemically for dermotophytes (microsporum infection). It is ineffective topically. Treatment of Tinea/ Pityriasis versicolar Systemic (oral) Local (Shampoo/cream) New treatment Old Treatment Ketocoazole Itraconazole Micoconazole Econazole Ketoconazole Clotrimazole Whitfield's ointment (3% salicylic acid and 6% Benzoic acid) Selenium disulphide Sodium Thiosulphate