Excessive sweating can be caused by a variety of internal and external factors, including thyroid problems, diabetes, infection and diet. Sweating a natural reaction caused by the body’s need to cool down, such as after a work out or when in warm climates. Like all bodily functions, the amount of sweat varies from person to person, however, hyperhidrosis or excessive sweating does plague as much as 3% of the U.S. population. Both localized and generalized hyperhidrosis can be treated through at-home remedies or by trained dermatologists who can assess and diagnose the cause and develop a targeted treatment plan involving prescription antiperspirants, iontophoresis, Botox® injections and even surgical procedures.