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Diaphoresis is a medical term for perspiration or sweating. The term usually refers to unusually heavy perspiration.
Hyperhidrosis pertains to sweating excessively and unpredictably, usually as a result of overactive sweat glands.
In July of 2004, the U.S. Food and Drug Adminstration (FDA) approved the use of Botox (botulism toxin) to treat severe underarm sweating. Botox is a prescription-only medication that is injected into the affected areas. It should only be used after your physician has ruled out other potential causes of the problem (such as hyperthyroidism; see the Medline link below) and treatments. Botox has since been used as a cosmetic that works by paralyzing facial muscles to reduce the appearance of wrinkles.
Some hazardous chemicals can cause excessive sweating. A classic example is metal fume fever caused by exposure to welding fumes.
Diaphoresis can appear in Section 11 (toxicological information) of a material's Safety Data Sheet, although most sheets will use the layman's term, sweating. Hyperhidrosis rarely, if ever, appears on an SDS.
Unusually heavy sweating could be from working in a hot environment or it could be a symptom of exposure to certain toxic chemicals. Additional symptoms such as palpitation, vertigo, prostration, or a general feeling of being unwell may or may not accompany your sweating. Either way, take a break and get some fresh air. If the symptoms persist, seek medical attention.
See also: dermal
Additional definitions from Google and OneLook.
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