When heat exhaustion progresses to heat stroke, nausea can set in. A queasy feeling in the stomach, along with dizziness, develops due to the toxic effects of too much UV radiation and can have long-term effects on the body. Heat stroke can cause damage to the internal organs in extreme cases. The body may react to increased body temperature caused by heat stroke by vomiting or attempting to vomit. Hydrating and getting out of the sun can help ease these symptoms.

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