Gustatory sweating (auriculotemporal syndrome) describes both a physiological
response to hot and spicy food - facial sweating - and a pathological state,
Frey's syndrome, which is a late complication of parotid surgery in about 25%
- in 1923, Frey reported this syndrome as a complication of infection of the
parotid gland. As a result, gustatory sweating related to parotid surgery
or injury is known as Frey's syndrome.During surgery of the parotid, parasympathetic
secretomotor fibres may be divided. The fibres originally inervated the parotid
gland. However, the fibres regenerate in the skin where they assume control
of sweat gland activity. This inappropriate innervation results in facial
sweating occuring in response to salivatory stimuli - the sweating in this
situation is usually on one site of the head.
- gustatory sweating is also a rare complication of diabetes mellitus. In
this case sweating may occur on both sides of the head, with mild or substantial
severity. It is thought to be due to axonal regeneration within the autonomic
nervous system (1)
- Botulinum toxin A injection is a safe and effective treatment with long-lasting
effects for patients with extensive gustatory sweating (2)
Med. 1996 Dec; 13(12): 1033-7.
Neck. 2003 Aug; 25(8): 624-8.