Sweating when the head is hot may be related to physiological factors, but may also be related to hyperthyroidism, diabetes mellitus, and pituitary gland dysfunction and other pathologic or pharmacologic factors. Restricted hyperhidrosis is a kind of hyperhidrosis, which mostly occurs in the palm and plantar area, armpit, groin, perineum and so on, and can also occur in the forehead, tip of the nose and chest and other parts of the distribution of sweat glands. 1. Physiological factors: high ambient temperature, excessive mental stress and diet are the key factors triggering hyperhidrosis. 2. Pathologic factors: acute infections, hyperthyroidism, diabetes, pituitary gland dysfunction, as well as pregnant women and menopausal women can cause hyperhidrosis. 3. Drug factors: some drugs in the process of taking the phenomenon of excessive sweating, such as sertraline, duloxetine and other antidepressants, acetaminophen, ibuprofen and other antipyretic and analgesic drugs. For the exclusion of physiological factors recurring limitations of excessive sweating, we must go to the hospital in time to improve the relevant examination, clear cause for targeted treatment.