Excessive Sweating Hyperhidrosis, commonly known as excessive sweating, is a medical condition where a person sweats more than necessary to regulate their body temperature. This can lead to uncomfortable, embarrassing, and even limiting situations in daily life. It can affect various parts of the body, such as palms, soles, armpits, and even the face. Treatment options include antiperspirants, iontophoresis, botox injections, and in severe cases, surgery.