Palmoplantar hyperhidrosis is excessive sweating localized to the palms of the hands and soles of the feet. It is a form of focal hyperhidrosis in that the excessive sweating is limited to a specific region of the body. As with other types of focal hyperhidrosis (e.g. axillary, craniofacial) the sweating tends to worsen during warm weather.
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Palmoplantar hyperhidrosis Wikipedia(Text) CC BY-SA