Why would antihistamines be prescribed to help treat vertigo?

Question

Quizplus · Accepted Answer

When drug therapy is indicated,antihistamines are most widely prescribed.This is most likely because centrally acting antihistamines have anticholinergic actions that can moderate symptoms of motion sickness.Acetylcholine and histamine are excitatory neurotransmitters involved in the control of vomiting (emesis).Nausea and vomiting are common symptoms of vertigo.Moreover,antihistamines and anticholinergics are vestibular suppressants.Vestibular suppression is useful because it reduces the eye activity responsible for symptoms of vertigo.Administration of vestibular suppressants is not recommended when treatment for vertigo involves physical manipulation of the head and "retraining" of vestibular pathways.

Why Would Antihistamines Be Prescribed to Help Treat Vertigo