Hyperhidrosis is a syndrome in which the body sweats beyond the needs of thermoregulation

resulting in excessive systemic or local sweating. It belongs to "sweating syndrome" in traditional Chinese medicine. After cancer surgery

patients are just divorced from pathogens

and their healthy qi is lacking. At this time

their yin and yang are both weak and lose their balance. People who suffer from hyperhidrosis can be described as "yang floating and yin weakness" . Floating yang results from its weakness and yin deficiency leads to its weakness

which also belong to disharmony of

ying

and

wei

qi. When yang and yin are both weak

inner yin can not hold yang

and thus outlying yang shall drift away. Besides

weak patients would become awfully vulnerable to exogenous diseases. Their exterior yang would struggle to fight the pathogens only to get sicker

thus causing hyperhidrosis. Danggui Liuhuang Decoction (Chinese Angelica Six Yellow Decoction) can fix the pattern of yin deficiency with effulgent fire and pattern of qi deficiency due to sweat. It also agrees with patten of yin and yang deficiency. However

there is some difference between them. Patients with pattern of yin deficiency with effulgent fire could be weak because of abnormal sweating

while patients after cancer surgeries are characterized by both yin and yang deficiency. Therefore

Danggui Liuhuang Decoction can not only tonify and strengthen yin

but also warm and reinforce exterior yang

and is used in the treatment of postoperative hyperhidrosis in cancer patients with "yang floating and yin weakness" .