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: Skin
Fogo selvagem is a type of: 
Select and explain. 
A. Pemphigus vulgaris, B. Pemghigus vegetans, C. Pemphigus foliaceus, D. Bullous pemphigoid
C: Pemphigus foliaceus
Answer: C: Pemphigus foliaceus 
Explanation: Endemic pemphigus foliaceus common in rural pas of South America, paicularly ceain states of Brazil is known as fogo selvagem (wild fire) caused by bite of black fly. Ref: Rook's textbook of dermatology, 8th edition, Pg 40.13