This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'All are true of tinea Versicolor except - \nSelect and explain. \nA. Drug of choice is griseofulvin, B. The causative agent is Malassezia furfur, C. Wool lamp shows yellow fluorescence, D. KOH mount shows meatball and spaghetti appearance', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans-ATinea VersicolorCausative agent: Pitryrosporuni orbiculare (Malassezia furfur)It is a superficial fungal infection of the skin caused by Malassezia furfur and related fungiThe yeast phase was known as Pityrosporum orbiculare (round); Pityrosporum ovale (oval)Now the genus Pityrosporum is considered invalidM. sympodialis - most common on normal skinM.globosa-most commonly associated with tinea versicolorPredisposing factors:Warm and humidClimate of tropicsPregnancySerious underlying disease,Immunocompromised hostBoth hyper and hypopigmented lesions are seenFine branny powdery scales are seen (Candle grease sign or coup doggie sign)Diagnosis:KGH mount; Spaghetti and meatball appearanceCultureWood's lamp examination: Gold to orange fluorescenceTherapyTopical; 2.5% Selenium sulphideSystemic; Ketoconazole, Itraconazole, Flucanozole - Single oral doseOther fungal infectionsDermatophytes I ringworm - superficial fungal infections by three genera- all affect the skin: Microsporum affects hair while epidermophvton affects nailsTrichophyton - affects skin, hairs, nails (remember as tri-all three structures affected)Most common cause of dermatophyte infectionTrichophyton rubrumMicrosporum - affects skin and hairEpidermophvton - affects skin and nailsCandidiasis - most common causative agent is Candida albicansOther species- C.glabrata, C.parapsilosis. C.tropicalis- rarely pathogenic", 'role': 'assistant'}]