Extreme heat linked to 33 diagnoses that go beyond dehydration, heat stroke
Peer-Reviewed Publication
Updates every hour. Last Updated: 20-Oct-2026 19:16 ET (20-Oct-2026 23:16 GMT/UTC)
When temperatures spike, emergency physicians expect to see more cases of dehydration and heat stroke. But a new Northwestern University study suggests that extreme heat also is linked to a much wider range of health problems seen in emergency departments and urgent care clinics, including skin conditions, multiple sclerosis and even injuries from traffic accidents.
The findings could help emergency departments and health care systems better prepare for heat waves, which are becoming more prevalent with climate change.
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