Sweating underarms may firstly be caused by physiological factors such as hot weather and wearing too many clothes, and no treatment is needed. Secondly, it may also be caused by primary hyperhidrosis, hyperthyroidism, etc., which requires medication and surgery. 1. Physiological factors: If you are in a hot environment for a long time, or wear more clothes may lead to increased sweating in the armpits. This is a normal physiological phenomenon, usually to a cool environment or wear less clothing sweating symptoms will be reduced. 2. Primary hyperhidrosis: related to sweat gland secretion, can be used under the guidance of the doctor 0.5% aluminum acetate solution, 5% tannic acid solution and other antiperspirants. In addition, some patients can also be prescribed oral scopolamine, atropine and other anticholinergic drugs. For drug treatment is not effective, you can take sweat gland excision, sympathetic nerve blocking surgery treatment. 3. Hyperthyroidism: hyperthyroidism will also make the patient appear the symptoms of underarm sweating, the patient can use methylthiouracil, propylthiouracil and other inhibitors of thyroid hormone synthesis under the guidance of the doctor. For the drug treatment is ineffective, can take thyroidectomy treatment. The patient’s sweaty armpits are also considered to be caused by diabetes, Parkinson’s disease, traumatic brain injury and other diseases, the patient needs to consult a doctor in time to check the cause. If it is physiological factors caused by sweaty armpits can not be treated, for the disease caused by sweaty armpits need to consult a doctor in a timely manner, in accordance with the doctor’s instructions for treatment.