Hair sweating generally refers to head sweating, summer head sweating is usually caused by physiological factors, generally without treatment; but may also be caused by pathological factors, such as hyperthyroidism, diabetes, etc., need to be taken by the doctor to take lifestyle changes, medications (such as propylthiouracil, glibenclamide, etc.), surgery and other ways, for treatment. 1. Physiological factors: the summer weather is hot, the thermoregulatory center needs to sweat to dissipate heat, leading to the phenomenon of summer head sweating. Usually there is no need to treat, should be appropriate supplemental water, avoid prolonged exposure to high temperature environment, so as to avoid heat stroke. 2. Pathologic factors: (1) Hyperthyroidism: patients may be agitated, sweaty, hyperphagia, emaciation and other phenomena due to the increase of thyroid hormones, leading to sweating of the head in summer. Patients should ensure rest, avoid overwork, and take a low iodine diet, and should follow the doctor’s instructions oral propylthiouracil, methylthiouracil, etc., to reduce the synthesis of thyroid hormones, non-surgical treatment is ineffective, such as patients, can be taken to the subtotal resection or total resection, for treatment. (2) Diabetes mellitus: when the patient’s blood sugar is not well controlled, it can cause autonomic dysfunction, leading to the phenomenon of head sweating in summer. Patients should eat a reasonable diet, intake to achieve or maintain ideal body weight, and follow the doctor’s instructions oral glibenclamide, nateglinide, metformin, pioglitazone, acarbose, etc., to control blood glucose, and, if necessary, can also be combined with the use of insulin. Under normal circumstances, head sweating in summer does not require medical attention, if accompanied by other uncomfortable symptoms, you should immediately go to the hospital, identify the cause of the disease, and then receive treatment as soon as possible.