Crocodile tears are due to -
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.
Cross innervation of facial nerve fibers
Cross innervation of trigeminal nerve fibers
Improper regeneration of trigeminal nerve
Improper regeneration of facial nerve