In Frey's syndrome, there is excessive sweating, flushing or both localized to the distribution of the auriculotemporal nerve in response to gustatory stimuli. It is not an uncommon sequel to traumatic lesions of the auriculotemporal nerve. It is thought that sympathetically denervated sweat glands are reinnervated by aberrant parasympathetic fibers. In adults, it may follow parotid surgery. In infants, it often affects those who were delivered with forceps. Herpes Zoster has precipitated Frey's syndrome (see reference below).
Excessive flushing, sweating or both of the cheek during is seen. It may manifest itself during infancy with the introduction of solid food, and has been misdiagnosed as food allergy in this setting.
In infants treatment is ineffective and unnecessary. This benign condition often resolves spontaneously. For adults, injection of botulinum toxin is first line treatment [JEADV 2016;30;907]. Topical application of anticholinergic drugs has also been done.
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