This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cranial Nerve Disorders, Subject name: Medicine
[{'content': "Facial nerve involvement in herpes zoster is known as? \nSelect and explain. \nA. Ramsay hunt syndrome, B. Melkersson Rosenthal syndrome, C. Jaw wrinkling syndrome, D. Frey's syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER: (A) Ramsay hunt syndromeREF: Harrison's 17th ed chapter 371The Ramsay Hunt syndrome, caused by reactivation of herpes zoster in the geniculate ganglion, consists of a severe facial palsy associated with a vesicular eruption in the external auditory canal and sometimes in the pharynx and other parts of the cranial integument; often the eighth cranial nerve is affected as well.", 'role': 'assistant'}]