If you are experiencing a medical emergency please dial 911 immediately
Many medicines change your body's ability to stay cool.
Alcohol and illegal drugs, such as methamphetamines, amphetamines, cocaine, heroin, PCP (phencyclidine hydrochloride), and LSD (lysergic acid diethylamide), also affect your ability to sense dehydration or heat-related symptoms. These substances also reduce your judgment about whether treatment is needed for a heat-related illness.
Last Revised: September 1, 2011
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