MSD Manual

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Some Causes of Excessive Sweating

Some Causes of Excessive Sweating

Type

Examples

Cancer*

Drugs

Antidepressants, aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs), some drugs for diabetes, caffeine, and theophylline

Withdrawal from opioids

Hormonal (endocrine) disorders

Infections*

Nervous system disorders

Injuries, dysfunction of the autonomic nervous system, and some brain disorders

Other†

Pregnancy

Fever

Heat exposure

Sweating around the lips and mouth after eating hot, spicy foods (called gustatory sweating)

Unknown

* These types primarily cause night sweats.

† Some degree of sweating caused by these conditions can be normal.