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: Dental
An otherwise healthy male presents with a creamy curd like white patch on the tongue. The probable diagnosis is – 
Select and explain. 
A. Candidiasis, B. Histoplasmosis, C. Lichen planus, D. Aspergillosis
A: Candidiasis
Answer: A: Candidiasis 
Explanation: While creamy curd like patches over oral mucosa / tongue are characteristic of oral thrush.
Oral candidiasis (thrush) may be seen in otherwise healthy individuals but the occurance of thrush in such individuals should prompt an investigation for underlying HIV infection.