What is the reason why you sweat when your hands are hot?

In fact, the palms have been sweating, probably because of palmar hyperhidrosis. Palmar hyperhidrosis is a common functional local abnormal hyperhidrosis, mainly manifested as palmar sweating, and some patients are accompanied by foot sweating, underarm sweating and head and face sweating. Suffering from palmar hyperhidrosis, intermittent or uninterrupted sweating on both palms can occur many times in one day, and one attack usually lasts for 5-30 minutes, which is completely out of control.

Palmar hyperhidrosis can be divided into primary hyperhidrosis and secondary hyperhidrosis. Primary palmar hyperhidrosis is caused by excessive sympathetic nerves, and most patients with palmar hyperhidrosis belong to primary palmar hyperhidrosis. Secondary palmar hyperhidrosis is sweating caused by some diseases, such as hyperthyroidism, diabetes and tuberculosis.