During the ear examination, cough occurs due to stimulation of?
Arnold nerve. It is an auricular branch of the jugular ganglion of the vagus. It supplies the skin of posterior pa of pinna on the medial surface of the concha, and posterior wall of the external auditory canal and tympanic membrane. The auricular nerve is the afferent limb of the Ear-Cough or Arnold Reflex. Ref: Dhingra 6th edition pg no 446
Vagus
Trigeminal
Hypoglossal
Trochlear
Ear