Answer: Sweating is a regular part of our daily lives and is necessary for regulating our body temperature by cooling the body. Certain individuals have overactive sweat glands and produce an excessive amount of sweat. In medical terms, excessive sweating is called hyperhidrosis.
Sweat glands are controlled by the hypothalamus, a part of the brain that sends signals to the sweat glands to produce sweat. Hyperhidrosis occurs when the sweat glands do not properly process these signals and end up producing excessive amounts of sweat particularly in the underarms and on the face, palms and feet.