Crocodile tears are due to -: (A) Cross innervation of facial nerve fibers, (B) Cross innervation of trigeminal nerve fibers, (C) Improper regeneration of trigeminal nerve, (D) Improper regeneration of facial nerve
Answer is D. Crocodile tears (gustatory lacrimation):- There is unilateral lacrimation with mastication. This is due to faulty regeneration of parasympathetic fibres which now supply lacrimal gland instead of the salivary glands. It can be treated by a section of greater superficial petrosal nerve or tympanic neurectomy.