We present two Parkinson's disease (PD) patients, who experienced heatstroke. Both patients manifested central nervous system dysfunction with elevated core temperature. Despite adequate lowering of the body temperature, multiorgan-dysfunction syndrome including encephalopathy, rhabdomyolysis, acute renal failure, acute respiratory failure, and disseminated intravascular coagulopathy was noted in one patient, leading to permanent neurologic damage. Because the ensuing multiorgan dysfunction could determine the functional prognosis in heatstroke patients, it is important to provide information about the prevention of heatstroke to patients, who are isolated or are severely disabled in the advanced stages of PD.
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