<unk>  is a condition characterized by asymmetric sweating and flushing on the upper thoracic region of the chest, neck and face.<unk>  is considered an injury to the autonomic nervous system (ANS). The ANS controls some of the body's natural processes such as sweating, skin flushing and pupil response to stimuli. Such individuals with this syndrome have an absence of sweat skin flushing unilaterally; usually on the one side of the face, arms and chest. It is an autonomic disorder that may occur at any age.<unk>  affects fewer than 200,000 people in the United States. Symptoms associated with<unk>  are more likely to appear when a person has been in the following conditions: exercising, warm environment and intense emotional situation. Since one side of the body sweats and flushes appropriately to the condition, the other side of the body will have an absence of such symptoms. This syndrome has also been called the<unk>  sign" and thought to be one of the spectrum of diseases that may cause<unk> . It can also be the outcome of a one sided endoscopic thoracic sympathectomy (ETS) or endoscopic sympathetic blockade (ESB) surgery.<unk>  can also be seen as a complication of VA (veno-arterial) extracorporeal membrane oxygenation (ECMO). This involves differential hypoxemia (low oxygen levels in the blood) of the upper body in comparison to the lower body.
Harlequin syndrome
Pretzel syndrome
Rapunzel syndrome
Keutel syndrome
Irlen syndrome
Sly syndrome
Stauffer syndrome
STAR syndrome