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What are heat cramps?

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Heat cramps are painful, brief muscle cramps. Muscles may spasm or jerk involuntarily. Heat cramps can happen during exercise or when you're working in a hot environment. They can also begin a few hours later.

From: Heat Cramps WebMD Medical Reference

SOURCE: The National Institute for Occupational Safety and Health: "Heat Stress."

Reviewed by Sabrina Felson on October 15, 2017

SOURCE: The National Institute for Occupational Safety and Health: "Heat Stress."

Reviewed by Sabrina Felson on October 15, 2017

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What causes heat cramps?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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