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Babies and heat rashes

Heat rashes and babies; Prickly heat rash; Red miliaria

Heat rash occurs in babies when the pores of the sweat glands become blocked. This happens most often when the weather is hot or humid. As your infant sweats, little red bumps and possibly tiny blisters form because the blocked glands cannot clear the sweat.

Information

To avoid heat rash, keep your baby cool and dry during warm weather.

Some helpful suggestions:

  • During the hot season, dress your baby in lightweight, soft, cotton clothing. Cotton is very absorbent and keeps moisture away from your baby's skin.
  • If air conditioning is not available, a fan may help cool your infant. Place the fan far enough away so that there is only a gentle breeze drifting over your infant.
  • Avoid the use of powders, creams, and ointments. Baby powders do not improve or prevent heat rash. Creams and ointments tend to keep the skin warmer and block the pores.
Open References

References

Howard RM, Frieden IJ. Vesiculopustular and erosive disorders in newborns and infants. In: Bolognia JL, Schaffer JV, Cerroni L, eds. Dermatology. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 34.

Martin KL, Ken KM. Disorders of the sweat glands. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 681.

Moon M, Guerrero AM, Li X, Koch E, Gehris RP. Dermatology. In: Zitelli BJ, McIntire SC, Nowalk AJ, Garrison J, eds. Zitelli and Davis' Atlas of Pediatric Physical Diagnosis. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 8.

  • Heat rash

    Heat rash - illustration

    To prevent or treat heat rash in an infant, dress the baby in light-weight cotton, use a fan with a gentle breeze (if air conditioning is unavailable), and avoid the use of powders.

    Heat rash

    illustration

  • Infant heat rash

    Infant heat rash - illustration

    The best way to prevent heat rash is to keep the baby's skin cool and dry during warm weather. Also dress the infant in light cotton clothing to help absorb excess moisture.

    Infant heat rash

    illustration

    • Heat rash

      Heat rash - illustration

      To prevent or treat heat rash in an infant, dress the baby in light-weight cotton, use a fan with a gentle breeze (if air conditioning is unavailable), and avoid the use of powders.

      Heat rash

      illustration

    • Infant heat rash

      Infant heat rash - illustration

      The best way to prevent heat rash is to keep the baby's skin cool and dry during warm weather. Also dress the infant in light cotton clothing to help absorb excess moisture.

      Infant heat rash

      illustration

     

    Review Date: 11/6/2023

    Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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