Hyperhidrosis is excessive perspiration. Sometimes, the condition is idiopathic, meaning that the cause is unknown, or it may be a result of underlying conditions. Hyperhidrosis can be embarrassing and uncomfortable, and can even occur in cool weather or while sitting quietly. The symptoms vary with the cause, and as such, the condition is broken down into two types: primary and secondary.
Individuals with focal sweating only perspire profusely on one or a few parts of the body. It could be the underarms, the palms of the hands, the soles of the feet, or the forehead, while the rest of the body is unaffected. These areas may literally drip with perspiration.
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