A review of the surgical and medical treatment of Frey syndrome.

Frey syndrome represents a fascinating example of how nerve regeneration can go awry. The syndrome is characterized by profuse facial sweating and flushing that occurs when salivation is stimulated. It can develop following a variety of insults but is most commonly encountered as a complication of parotidectomy. Consequently, it is mainly head and neck surgeons who see and treat this disorder; however, it is important for other clinicians to recognize what these unusual symptoms represent. Diagnosis may be based either on clinical presentation or through objective testing methods. Potential negative social and psychologic implications of this condition can be significant, and treatment ranging from topical agents to local injections of botulinum toxin (Botox) to surgical intervention should be offered to patients. In this article, we present an up-to-date review of the surgical and medical treatment of this syndrome.