Primary hyperhidrosis usually begins in childhood or the teen years and affects the underarms, palms, soles or face. It isn't caused by poor hygiene or nerves alone; the nerves that signal sweat glands are simply overactive. Sweating that starts suddenly in adulthood, affects the whole body or happens mostly at night can be a sign of another condition and should be checked by a doctor.
Everyday tips
- Apply antiperspirant at night to clean, dry skin, when sweat glands are least active, so it has time to work
- Choose clinical-strength antiperspirants containing aluminum chloride
- Wear breathable, moisture-wicking fabrics and darker colors or patterns that hide sweat marks
- Keep spare socks and change them during the day; use absorbent foot powder
- Limit triggers such as caffeine, alcohol and spicy foods if they make sweating worse
- Try relaxation techniques if stress sets off sweating
Medical treatments
When everyday steps aren't enough, a dermatologist can offer:
- Prescription antiperspirants with higher-strength aluminum chloride
- Prescription wipes or gels that block the nerve signal to sweat glands
- Oral medications that reduce sweating throughout the body
- Botulinum toxin (Botox®) injections, which can reduce underarm sweating for several months
- Iontophoresis, a device that uses a mild electrical current through water to reduce hand and foot sweating
Excessive sweating is treatable. A dermatologist can help you find the option that fits your symptoms and lifestyle.
This article is for general education and isn't a substitute for a visit with a physician.