Health Information and Tools >  Heatstroke: Emergency Symptoms
Facebook Tweet Email Share

Main Content

Heatstroke: Emergency Symptoms

Topic Overview

Signs of rapidly progressing heatstroke include:

  • Unconsciousness for longer than a few seconds.
  • Convulsion (seizure).
  • Signs of moderate to severe difficulty breathing.
  • A rectal temperature over 40°C (104°F) after exposure to a hot environment.
  • Confusion, severe restlessness, or anxiety.
  • Fast heart rate.
  • Sweating that may be heavy or may have stopped.
  • Skin that may be red, hot, and dry, even in the armpits.
  • Severe vomiting and diarrhea.

After calling 911 or other emergency services, begin emergency first aid treatment if emergency medical personnel (such as paramedics) are not going to arrive soon.

Related Information

References

Other Works Consulted

  • Lipman GS, et al. (2013). Wilderness Medical Society practice guidelines for the prevention and treatment of heat-related illness. Wilderness and Environmental Medicine, 24(4): 351–361.

Credits

Current as of: February 26, 2020

Author: Healthwise Staff
Medical Review:
William H. Blahd Jr. MD, FACEP - Emergency Medicine
Adam Husney MD - Family Medicine
Kathleen Romito MD - Family Medicine
H. Michael O'Connor MD - Emergency Medicine

This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.