Hyperhidrosis - Introduction

Introduction Causes Symptoms Treatments

Hyperhidrosis means excessive sweating. It can be localized or affect the whole body.

Sweating is controlled by parts of the brain, which send signals along nerves to the small sweat glands in the skin. These nerves are part of the “autonomic nervous system” which controls many unconscious body functions. Some of these functions, including sweating, are called “sympathetic”. (This is different from the everyday use of the word and does not suggest any emotional meaning).

Increased sweating is a normal response to a rise in body temperature, and to emotions like anxiety.
A treatment that reduces sweating is called an antiperspirant. This is different from a deodorant, which reduces odour, usually through an antibacterial effect. The two are often combined in the same product.