Excessive underarm sweating is usually just a sign of hyperhidrosis. Due to individual differences, some people may produce large amounts of sweat in their armpits. This sweating is related to the individual differences of the patient that lead to overdeveloped sweat glands in the armpits, such as dense sweat glands, parietal sweat glands, and common sweat glands, which can cause a lot of sweat to go out in that area. This disease is not actually particularly harmful to the body, but if sweating is excessive, it may cause adverse reactions such as electrolyte disturbances in the body. Therefore, measures need to be taken to control sweating, or surgical treatment can be used to destroy the local sweat glands, such as laser treatment to reduce sweat gland secretion, sweating will be significantly reduced.