What should you know about very sweaty palms?

Sweating from the hands can make handshakes, holding a phone, driving, sports, paperwork and using touchscreens uncomfortable. It can happen during stress or warm weather, but some people notice it even when they feel calm and the room is cool.

Sweat glands are controlled by nerves that also respond to heat, emotion, exercise and illness. In some people, the signal to the palms is more active than needed for temperature control. Excessive sweating may be focused on the hands, or it may occur with sweating elsewhere on the body.

A new change in sweating can also accompany an underlying health issue or a medicine effect. Details such as night sweats, tremor, weight change, episodes of shakiness, fever, breathlessness, snoring, or a change after starting a medicine help a clinician decide whether further checks are useful.

Keep a small absorbent cloth available for tasks that need a dry grip, and choose breathable gloves only when they are required. Notice whether caffeine, spicy food, nicotine, anxiety, heat, or particular situations make the sweating more troublesome; a brief symptom diary can make patterns clearer.

A pharmacist or clinician can advise whether an antiperspirant is suitable for the hands and how to use it without irritating the skin. If symptoms persist, dermatology options may include iontophoresis, which uses a mild electrical current in water, or injections that reduce nerve signals to sweat glands. Treatment selection depends on your skin, daily activities and medical history.

Arrange a medical assessment when sweating begins suddenly, becomes much more intense, disturbs sleep, affects work or social life, or occurs with symptoms such as a racing heartbeat, tremor, unexplained weight change, repeated shakiness, or feeling unwell. These features deserve attention because they can point to a cause beyond hand sweating itself.

Seek urgent help for heavy sweating with confusion, fainting, chest pain, severe shortness of breath, or signs of overheating such as weakness and dizziness in hot conditions.

Ask whether your pattern suggests hand-focused excessive sweating, whether any medicines or health conditions should be reviewed, and whether testing is appropriate. You can also ask how to use a hand antiperspirant, whether iontophoresis fits your routine, and what skin irritation or temporary weakness to watch for with treatment.