Excessive sweating is when you sweat more than you might expect based on the surrounding temperature or your activity level or stress. Excessive sweating can disrupt daily activities and cause social anxiety or embarrassment.
Excessive sweating, or hyperhidrosis (hi-pur-hi-DROE-sis), can affect your entire body or just certain areas, particularly your palms, soles, underarms or face. The type that typically affects the hands and feet causes at least one episode a week, during waking hours.
If heavy sweating has no underlying medical cause, it's called primary hyperhidrosis. This type occurs when the nerves responsible for triggering your sweat glands become overactive and call for more perspiration even when it's not needed. Primary hyperhidrosis may be at least partially hereditary.
If the sweating can be attributed to an underlying medical condition, it's called secondary hyperhidrosis.
Call 911 or get emergency medical help
Seek immediate medical attention if your heavy sweating is accompanied by:
- Chest pain
- A body temperature of 104 F (40 C) or higher
Schedule a doctor's visit
Contact your doctor if you experience any of the following:
- You suddenly begin to sweat more than usual.
- Sweating disrupts your daily routine.
- You experience night sweats for no apparent reason.
June 21, 2018
- What is a heart attack? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/heartattack. Accessed July 2, 2015.
- Goldsmith LA, et al., eds. Disorders of the eccrine sweat glands and sweating. In: Fitzpatrick's Dermatology in General Medicine. 8th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com. Accessed July 2, 2015.
- AskMayoExpert. Hyperhidrosis (adult and pediatric). Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2015.
- Robertson D, et al., eds. Sweating. In: Primer on the Autonomic Nervous System. 3rd ed. Maryland Heights, MO: Elsevier; 2012.
- Bolognia JL, et al. Diseases of the eccrine and apocrine sweat glands. In: Dermatology Essentials. Philadelphia, Pa.: Saunders Elsevier; 2014. http://www.clinicalkey.com. Accessed July 2, 2015.
- HIV/AIDS. National Institute of Allergy and Infectious Diseases. http://www.niaid.nih.gov/topics/HIVAIDS/Understanding/Pages/symptoms.aspx. Accessed July 10, 2015.
- Marx JA, et al. Heat illness. In: Rosen's Emergency Medicine: Concepts and Clinical Practice. 8th ed. Philadelphia, Pa.: Mosby Elsevier; 2014. http://www.clinicalkey.com. Accessed July 10, 2015.
- Malaria. First Consult. May 18, 2012. http://www.clinicalkey.com. Accessed July 10, 2015.
- Semkova K, et al. Hyperhidrosis, bromhidrosis and chromhidrosis: Fold (intertriginous) dermatoses. Clinics in Dermatology. 2015;33:483. http://www.clinicalkey.com. Accessed July 14, 2015.