The hypersympathetic activity causes the facial skin to appear greasy and in some cases, causes facial sweating as well. Facial blushing may occur alone, but it may also occur in tandem with facial sweating.

Facial sweating may be triggered by slight increases in temperature or humidity. Sweating may not only involve the face, but also the scalp. In some cases, it also extends to the neck as well. Excessive sweating in these areas for no apparent reason may actually be a condition of facial hyperhidrosis.

Facial hyperhidrosis is a medical condition, which is believed to be genetically determined and is not necessarily related to being overweight. It is a medical condition that, like many other types of hyperhidrosis, causes social in addition to physical problems for the individual.

Excessive sweating is often a cause of embarrassment and frustration. In the case of facial hyperhidrosis, it could manifest in the most unexpected time and in the most embarrassing situations like when talking to people, or being in an important meeting. If an individual suffers from any form of hyperhidrosis, sweating happens even in the absence of any nervousness, anxiety, or stress.

People who suffer from severe facial sweating or facial hyperhidrosis find themselves soaking with sweat on the face and scalp even while doing simple, effortless tasks. It is not uncommon for women who suffer from this condition to wear their hair short to keep them tidy. Also, they find wearing of make-up inconvenient and impractical because it will just run. Some others opt to carry a towel around their necks for convenience and stay in air-conditioned locations, avoid the outdoors, and refrain from attending social functions or activities. This limits their opportunities for social interaction. Before many of them realize it, facial hyperhidrosis has succeeded in making a tremendous social impact on their lives.

Anxiety medications are available to control the anxiety of those who suffer from social phobia. Meanwhile, involuntary and uncontrolled facial sweating and blushing is best treated with Endoscopic Thoracic Sympathectomy (ETS). The surgery is performed under general anaesthesia, and involves the partial removal of involuntary nerves from the chest area. These nerves are said to control the diameter of the blood vessels. The scope of ETS procedure extends to patients who suffer only from severe facial blushing. The success rate for facial blushing and facial hyperhidrosis is about 80 to 85%. The same procedure is also effective for palmar and axillary hyperhidrosis.