Focal hyperhidrosis, also known as primary hyperhidrosis, is a disease characterized by an excessive sweating localized in certain body regions (particularly palms, feet and underarms). Studies suggest that this condition, affecting between 1% and 3% of the US population, seems to have a genetic predisposition in about two thirds of those affected. Focal hyperhidrosis is sometimes referred to as The Silent Handicap, as it has a significant impact on the quality of life, affecting the individual socially, psychologically, emotionally and professionally. .