What should you know about nervous sweaty palms?

Sweat glands in the palms respond to nerves involved in alertness and emotion, so sweating may increase before an interview, presentation, examination, or difficult conversation. If the hands sweat heavily without obvious heat or exercise, soak through objects, interfere with writing, or occur repeatedly, the symptom may fit excessive sweating rather than a brief nervous reaction.

A clinician may also consider medicines and conditions that affect metabolism or sleep. Hyperthyroidism can increase sweating and palpitations; low blood sugar may cause sweating with shakiness, hunger, confusion, or weakness. Heat exhaustion and obstructive sleep apnoea have different patterns and accompanying symptoms.

Keep the hands cool, dry them gently, and notice whether episodes follow stress, heat, caffeine, medicines, meals, or sleep disruption. Use breathable materials and avoid harsh scrubbing, which can irritate the skin. If sweating is frequent or affects daily tasks, arrange a medical assessment rather than relying only on stress-management techniques.

Treatment depends on the pattern and cause. Options may include iontophoresis, botulinum toxin for sweating, or microwave sweat gland treatment in selected situations. A clinician can explain suitability, skin care, and expected temporary effects for each option.

Seek urgent help for sweating with chest pain, fainting, severe breathlessness, confusion, one-sided weakness, or signs of heat exhaustion. Prompt assessment is also appropriate when sweating begins suddenly with shaking or confusion, follows a medicine change, or occurs with unexplained weight loss, persistent palpitations, or night symptoms.

Ask whether the sweating is situational or excessive sweating, whether a medicine or medical condition could contribute, and which tests or treatment are appropriate. Ask how to protect irritated palm skin and when a treatment should be reviewed.