<prompt> Ramsay Hunt syndrome involves:7th cranial nerve5th cranial nerve12th cranial nerve10th cranial nerve  <response>: Ans: a 7th cranial nerve Ref: Harrison, 16th ed, p. 1043; Dhingra, 4th ed, p. 95,17th ed, p. 1103Ramsay Hunt syndrome Herpes zoster oticusIpsilateral facial nerve palsy with vesicular rash in external auditor canal and pinna.Geniculate ganglion of sensory branch of facial nerve is involvedManagement: similar to Bells palsyMelkerssons 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 