What should you know about extreme sweaty palms?

Primary palm sweating often begins earlier in life, affects both hands and occurs even when the body does not need cooling. Stress, concentration and warmth can intensify it. Secondary sweating may start suddenly or occur during sleep and can be linked with medicines, hormonal changes, an overactive thyroid, low blood sugar or heat exhaustion. Palms may become soggy, cracked or irritated, and wet hands can make tools, phones and paperwork difficult to manage. Excessive sweating is a symptom, so its pattern matters more than the word extreme.

Dry hands carefully, use absorbent materials for activities that need grip and protect cracked skin with a bland moisturiser. A clinician may discuss prescription antiperspirants, iontophoresis, botulinum toxin injections or microwave sweat-gland treatment depending on the distribution, triggers and impact. Treatment choice should include possible temporary weakness, irritation or compensatory sweating.

Arrange an assessment if sweating begins suddenly, is mainly on one side, occurs during sleep or comes with weight change, tremor, palpitations, thirst or repeated weakness. Get urgent help for sweating with chest pain, fainting, confusion, severe dizziness, hot dry skin or trouble breathing.

Ask whether the pattern suggests primary hyperhidrosis, whether tests or medicine review are needed, and how each treatment could affect hand strength, sensation and daily activities.