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Information from TN Dept of Health about the Ongoing Novel Coronavirus Outbreak

Heat-Related Illness

Interactive heat-related illness data dashboard

To learn more about heat-related illness data from 2000 to 2013 in Tennessee, click the link below. Our interactive data dashboard will visualize the data you select. Choose data from different options like:

  •  Rate by county
  • Rate by year
  • Rate by race
  • Rate by age group

What is heat-related illness?


If heat exposure exceeds the body’s ability to cool and core body temperature rises, a range of heat-related symptoms and conditions can develop. The most common heat-related illness is heat exhaustion. Heat-related symptoms range from mild heat edema and rash to heat cramps. Heat-related cramps, rash and edema are relatively minor, readily treatable conditions. These symptoms are important warning signs as heat exhaustion, heat syncope and heat stroke can be more harmful.

Why is tracking heat-related illness important?

Any individual regardless of age, sex or health status can develop heat-related illness if exposed to environmental heat and humidity. The Intergovernmental Panel on Climate Change suggests climate change will cause more frequent, more intense and longer heat waves.

About our heat-related illness data

This indicator estimates the number and rate of hospitalization and emergency department visits for heat stress. It includes all cases where heat stress is listed as a primary or other diagnosis. These data come from hospital records and may not capture the full range of heat-related illness if exposure to excess heat is not explicitly documented. These data can be used to document changes over place and time, monitor vulnerable areas and populations and evaluate the results of local climate-adaptation strategies.

Our heat-related illness data come from emergency department visits and hospitalizations. Heat-related illness data include:

  • Health outcome (heat stress)
  • State and county of residence
  • Year of hospitalization or emergency department visit

Our heat-related illness data do not include:

  • Out-of-state residents whose illness occurred in Tennessee
  • Tennessee residents whose illness occurred out-of-state

Additional resources

Centers for Disease Control and Prevention (CDC)
Environmental Public Health Tracking heat-related illness

U.S. Environmental Protection Agency (EPA)
Climate Change indicators

Intergovernmental Panel on Climate Change

Tennessee Department of Health (TDH)
Health Statistics