Frey's syndrome is caused by
Frey&;s syndrome results from parotid surgery due to aberrant regeneration of parasympathetic fibres of the facial nerve and auriculotemporal nerve. Ref: Dhingra 6th edition pg. 98
Post traumatic nerve fibers of facial nerve with parasympathetic of auriculotemporal nerve
Greater auricular nerve with auriculotemporal nerve
Facial nerve with greater auricular nerve
None
Ear