This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autoimmune skin disorders, Subject name: Dental
Rarest variety of Pemphigus 
Select and explain. 
A. Pemphigus vulgaris, B. Pemphigus foliaceous, C. Pemphigus vegetans, D. Pemphigus erythematosus
C: Pemphigus vegetans
Answer: C: Pemphigus vegetans 
Explanation: Pemphigus vegetans is a localized form of pemphigus vulgaris. in which there is a localized vegetating papillomatous response. The eroded areas do not heal like usual but form papillomatous growth and vegetation. Accounts for 1-2% of pemphigus cases and is a relatively benign variant of pemphigus vulgaris. Ref Harrison20th edition pg 2435