What Should You Know About Extra Sweaty Hands?

Sweating helps cool the body, but palm sweating can happen even when you are not hot or exercising. It may make handshakes, writing, phone use, tools, or electronic devices uncomfortable.

Palmar hyperhidrosis is excessive sweating focused on the palms. It may begin in childhood or adolescence and can run in families. Emotional stress, heat, activity, caffeine, or spicy food can trigger episodes, although sweating may also occur without an obvious trigger.

A clinician may ask whether both hands are affected, whether sweating occurs during sleep, when it began, and which medicines or health conditions you have. This helps distinguish focused palm sweating from sweating caused by a medicine or another medical problem. Persistently damp skin can also become irritated and may make fungal problems on the feet or between the toes easier to notice; see the guide to Athlete's Foot for related symptoms.

Keep a brief trigger diary and pat your hands dry rather than rubbing irritated skin. Carry an absorbent cloth, choose breathable materials for gloves, and take breaks from activities that trap heat or moisture. Avoid applying household products or strong chemicals to the palms.

A healthcare professional may suggest a topical antiperspirant designed for excessive sweating. If that is not enough or irritates your skin, iontophoresis is another option that uses a mild electrical current while the hands are placed in water. A clinician can explain whether it suits you, how to use it safely, and what maintenance may be needed. More information is available under Excessive Sweating, Iontophoresis, and Prescription Antiperspirant.

Arrange a medical assessment if sweating is new, worsening, affecting sleep or work, occurring across much of the body, or accompanied by weight change, fever, tremor, racing heartbeat, dizziness, or unusual thirst. Review medicines and supplements with the clinician rather than stopping a prescribed medicine yourself.

Seek urgent help if heavy sweating starts suddenly with chest pain, trouble breathing, fainting, confusion, or severe weakness. Those symptoms can signal a problem needing prompt assessment, regardless of whether your hands have sweated before.

Ask: Could this be palmar hyperhidrosis or a medicine-related problem? Which product should I apply, and how can I protect my skin? Would iontophoresis be appropriate for me? What changes should prompt a follow-up visit?