Gustatory sweating syndrome occurs several months to a few years after parotid gland surgery or submandibular gland surgery or radical neck dissection，and is characterized by sweating and flushing of the skin of the ear during meals. The pathogenesis of gustatory sweating is that the sympathetic and parasympathetic postganglionic fibers are damaged by surgical operation of parotid gland, and they regenerate and grow into sweat gland and blood vessel wall of skin. When the sufferers take food, parasympathetic nerve is excited and released acetylcholine, impelling sweat and blood vessel dilated and flush. Treatment method of gustatory sweat mainly includes anti- cholinergic drugs locally applied, and related parasympathetic nerve cut by surgical operation, and botulinum toxin A injected in sweating area.
