As triple-digit temperatures hit the East Coast, individuals with a mental illness taking psychiatric medications could be at risk for heat intolerance.

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

Tens of millions sweltered across the U.S. Northeast and Midwest on Monday (June 23) as record-high heat disrupted electricity supplies and train travel, driving people along the East Coast to parks and public fountains with manual and electronic fans in hand.