Sweat is a clear, salty liquid produced by glands in your skin. Sweating is how your body cools itself. You sweat mainly under your arms and on your feet and palms. When sweat mixes with bacteria on your skin, it can cause a smell. Bathing regularly and using antiperspirants or deodorants can help control the odor.
Sweating a lot is normal when it is hot or when you exercise, are anxious, or have a fever. It also happens during menopause. If you often sweat too much, it's called hyperhidrosis. Causes include thyroid or nervous system disorders, low blood sugar, or another health problem.
Sweating too little, anhidrosis, can be life-threatening because your body can overheat. Causes of anhidrosis include dehydration, burns, and some skin and nerve disorders.
- Antiperspirants/Deodorants and Breast Cancer (National Cancer Institute) Also in Spanish
- What's the Big Sweat about Dehydration? (For Kids) (Nemours Foundation) Also in Spanish
- Anhidrosis (Hypohidrosis) (Mayo Foundation for Medical Education and Research) Also in Spanish
- Heat Rash (Prickly Heat or Miliaria) (Mayo Foundation for Medical Education and Research) Also in Spanish
- Hyperhidrosis (Excessive Sweating) (American Academy of Dermatology)
- Hyperhidrosis (Excessive Sweating) (Mayo Foundation for Medical Education and Research)
- Night Sweats (Mayo Foundation for Medical Education and Research) Also in Spanish
- Sweating (American Cancer Society) Also in Spanish
- Sweaty Feet (Hyperhidrosis) (American Podiatric Medical Association)