Excessive and uncontrollable sweating of the hands or palms is called palmar hyperhidrosis. It is a condition that affects less than 5% of the population and can lead to significant discomfort, embarrassment and confidence issues.
In most cases, sweating is a natural and beneficial process that helps the body stay cool. It is also common for people to sweat when they feel anxious, angry or afraid. However, those who suffer from palmar hyperhidrosis can sweat without any trigger or warning – this can happen even if the temperature is cool or they are at rest.