Another important early step to treat heat stroke is to call 911 right away. Heat stroke can be fatal, but even in cases where patients survive heat stroke, there can sometimes be severe consequences. These include kidney failure, heart failure, and permanent brain damage. Muscle damage is also possible. Most of these consequences become irreversible if left untreated for too long, so always seek medical help rather than waiting to see if the person gets better on their own. Medical personnel often have better tools for cooling patients and reducing temperatures, as well as drugs that can treat secondary symptoms like shivering or seizures.
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