8 year old sweats excessively. During sleep, hair is saturated & beads of sweat on face. During play, his face drips with sweat. Friends not sweating.?

Hyperhidrosis. Hyperhidrosis is a medical condition in which a person sweats excessively and unpredictably. People with hyperhidrosis may sweat even when the temperature is cool or when they are at rest. There are also medical canditions that can cause this condition like: thyroid disease, heart disease, medications, lung disease and others.