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Sweating - Overview

Alternative Names

Perspiration

Definition of Sweating:

Sweating is the release of a salty liquid from the body's sweat glands. This process is also called perspiration.

Sweating is an essential function that helps your body stay cool. Sweat is commonly found under the arms, on the feet, and on the palms of the hands.


Sweating

Considerations:

How much you sweat depends on how many sweat glands you have. A person is born with about two to four million sweat glands. The glands start to become fully active during puberty. Women have more sweat glands then men, but men's glands are more active.

Sweating is controlled by the autonomic nervous system, the part of the nervous system that is not under your control. Because sweating is the body's natural way of regulating temperature, people sweat more when it's hot outside. People also sweat more when they exercise, or in response to situations that make them nervous, angry, embarrassed, or afraid.

Excessive sweating may also be a symptom of menopause.

See also:

Common Causes:

  • Alcohol
  • Caffeine
  • Cancer
  • Complex regional pain syndrome
  • Emotional or stressful situations (anxiety)
  • Essential hyperhidrosis
  • Exercise
  • Fever and infections
  • Infection
  • Low blood sugar (hypoglycemia)
  • Medications such as thyroid hormone, morphine, drugs to reduce fever, and medicines to treat mental disorders
  • Menopause
  • Spicy foods (known as "gustatory sweating")
  • Warm temperatures
  • Withdrawal from alcohol or narcotic painkillers
  • Reviewed last on: 5/29/2011
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Robertson D. Disorders of the autonomic nervous system. In: Bradley WG, Daroff RB, Fenichel GM, Jankovic J, eds. Neurology in Clinical Practice. 5th ed. Philadelphia, Pa: Butterworth Heinemann Elsevier; 2008:chap 81.

Saper CB. Autonomic disorders and their management. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 445.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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