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: ENT
A man presents with vesicles over external acoustic meatus with ipsilateral facial palsy of LMN type. The cause is 
Select and explain. 
A. Herpes zoster, B. Herpes simpex virus-I, C. Varicella, D. None
A: Herpes zoster
Answer: A: Herpes zoster 
Explanation: RAMSAY HUNT SYNDROME Herpes zoster oticus refers to a syndrome of acute otalgia accompanied by a herpetic, vesicular rash. When accompanied by facial paralysis, the syndrome is known as Ramsay Hunt syndrome.