This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve And Its Disorders, Subject name: ENT
Ramsay Hunt syndrome involves: 
Select and explain. 
A. 7th cranial nerve, B. 5th cranial nerve, C. 12th cranial nerve, D. 10th cranial nerve
A: 7th cranial nerve
Answer: A: 7th cranial nerve 
Explanation: Ans: a (7th cranial nerve) Ref: Harrison, 16th ed, p. 1043; Dhingra, 4th ed, p. 95,17th ed, p. 1103Ramsay Hunt syndrome (Herpes zoster oticus)Ipsilateral facial nerve palsy with vesicular rash in external auditor)' canal and pinna.Geniculate ganglion of sensory branch of facial nerve is involvedManagement: similar to Bell's palsyMelkersson's syndrome:Idiopathic disorder consisting of triad of facial paralysis, swelling of lips and fissured tongue.It may be recurrent.Treatment is similar to Bell palsyCauses of recurrent facial palsiesBell palsyMelkersson syndromeDiabetesSarcoidosisTumoursGuillain -Barre syndromeSarcoidosisSickle cell diseaseAcute leukemiaBulbar palsyLeprosy