Heat Rash

  • Medical Author:
    Benjamin Wedro, MD, FACEP, FAAEM

    Dr. Ben Wedro practices emergency medicine at Gundersen Clinic, a regional trauma center in La Crosse, Wisconsin. His background includes undergraduate and medical studies at the University of Alberta, a Family Practice internship at Queen's University in Kingston, Ontario and residency training in Emergency Medicine at the University of Oklahoma Health Sciences Center.

  • Medical Editor: Charles Patrick Davis, MD, PhD
    Charles Patrick Davis, MD, PhD

    Charles Patrick Davis, MD, PhD

    Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.

Quick GuideHeat Rash Pictures, Symptoms, Causes, & Treatments

Heat Rash Pictures, Symptoms, Causes, & Treatments

What are the symptoms of heat rash in children and adults?

The common symptoms of heat rash are red bumps on the skin, and an itchy or prickly feeling to the skin. These are due to inflammation of the superficial layers of the skin (the epidermis) and the prickly sensation is similar to the feeling of mild sunburn.

The symptoms of heat rash are the same in infants and adults; however, since an infant can't complain about the rash sensation, he or she may be fussy.

Who is at risk for heat rash?

Newborns, infants, the elderly, and obese individuals with large areas with skin-on-skin contact areas (for example, a large overlapping area of abdominal fat) are at risk for developing heat rash. They all are especially at risk if they are immobile for long periods of time and parts of the skin aren't exposed to circulating air, which results in the inability of the sweat ducts to "breathe" (evaporative cooling).

Heat rashes are more common in places with hot, humid, climates because people sweat more.

Intense exercise associated with lots of sweating may cause a heat rash, especially if the clothing worn does not allow adequate air circulation. Continue Reading

Reviewed on 11/3/2015
References
Medically reviewed by Norman Levine, MD; American Board of Dermatology

REFERENCES:

Rakel R. Textbook of Family Medicine. 8th edition. Philadelphia: Saunders/Elsevier. 2011

WebMD.com. Heat Rash Overview.

IMAGES:

1. Getty Images

2. Getty Images

3. iStock

4. iStock

5. iStock

6. Getty Images

7. iStock

8. Getty Images

9. iStock

10. Getty Images

Subscribe to MedicineNet's Skin Care & Conditions Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

VIEW PATIENT COMMENTS
  • Heat Rash - Describe Your Experience

    Please describe your experience with heat rash.

    Post View 57 Comments
  • Heat Rash - Symptoms

    What were the symptoms of your heat rash?

    Post View 7 Comments
  • Heat Rash - Treatment

    What was your heat rash treatment?

    Post View 11 Comments
  • Heat Rash - Home Remedies

    What home remedies have you tried for a heat rash?

    Post View 4 Comments
  • Heat Rash - Causes

    What are the triggers or causes of heat rash for you, a relative, or friend?

    Post View 2 Comments

Health Solutions From Our Sponsors