Rash

Is this rash something to worry about?

Content reviewed against published AAP, CDC guidelines

Editorial policy

Last reviewed:

Key takeaways

  • Go to the ER if: call 911 - possible anaphylaxis
  • Call your doctor if: call during office hours
  • Usually safe to monitor at home: monitor at home
  • When in doubt, call your pediatrician — they would rather hear from you than have you worry alone

Press on the rash with a glass or your finger. Does it temporarily go white (blanch)?

A rash that does NOT blanch (stays red/purple when pressed) can be a sign of a serious condition.

This is not medical advice. When in doubt, always call your pediatrician.

Quick Reference Guide

Call 911 / Go to ER

  • Call 911 - possible anaphylaxis

    Hives with breathing difficulty, swelling, or vomiting could be a severe allergic reaction.

    • Call 911 immediately
    • If you have an EpiPen prescribed, use it now
    • Lay your baby flat (or upright if having trouble breathing)
    • Do not give any food or drink

  • Go to the ER now

    A non-blanching rash (petechiae/purpura) can indicate a serious infection like meningitis. This needs immediate evaluation.

    • Go to the emergency room immediately
    • Note when the rash first appeared
    • Take a photo if possible to show the doctor

  • Call your pediatrician now

    This rash needs a same-day evaluation by your pediatrician.

    • Call your pediatrician or after-hours line
    • Take a photo of the rash to show the doctor
    • Note any new foods, products, or medications in the last 48 hours

Call Your Pediatrician

  • Call during office hours

    This is worth a call to your pediatrician, but likely not urgent.

    • Call your pediatrician at their next office hours
    • Take a photo of the rash
    • Note any new foods, soaps, or detergents
    • If the rash spreads rapidly or your baby develops a high fever, call sooner

Monitor at Home

  • Monitor at home

    Many rashes in babies are harmless - eczema, baby acne, heat rash, and drool rash are very common.

    • Keep the area clean and dry
    • Use fragrance-free moisturizer for dry patches
    • Avoid new soaps or detergents
    • Call your pediatrician if it spreads, blisters, or doesn't improve in a week

Rash — When to Seek Care Decision Guide

Urgency: Emergency / ER

Scenario: Call 911 - possible anaphylaxis

What to Do: Hives with breathing difficulty, swelling, or vomiting could be a severe allergic reaction.

Key Actions: Call 911 immediately; If you have an EpiPen prescribed, use it now; Lay your baby flat (or upright if having trouble breathing); Do not give any food or drink

Urgency: Emergency / ER

Scenario: Go to the ER now

What to Do: A non-blanching rash (petechiae/purpura) can indicate a serious infection like meningitis. This needs immediate evaluation.

Key Actions: Go to the emergency room immediately; Note when the rash first appeared; Take a photo if possible to show the doctor

Urgency: Emergency / ER

Scenario: Call your pediatrician now

What to Do: This rash needs a same-day evaluation by your pediatrician.

Key Actions: Call your pediatrician or after-hours line; Take a photo of the rash to show the doctor; Note any new foods, products, or medications in the last 48 hours

Urgency: Call Doctor

Scenario: Call during office hours

What to Do: This is worth a call to your pediatrician, but likely not urgent.

Key Actions: Call your pediatrician at their next office hours; Take a photo of the rash; Note any new foods, soaps, or detergents; If the rash spreads rapidly or your baby develops a high fever, call sooner

Urgency: Monitor at Home

Scenario: Monitor at home

What to Do: Many rashes in babies are harmless - eczema, baby acne, heat rash, and drool rash are very common.

Key Actions: Keep the area clean and dry; Use fragrance-free moisturizer for dry patches; Avoid new soaps or detergents; Call your pediatrician if it spreads, blisters, or doesn't improve in a week

Based on AAP and CDC symptom management guidelines. Always call 911 for life-threatening emergencies.

Frequently asked questions

When should I take my baby to the ER for rash?
Call 911 - possible anaphylaxis: Hives with breathing difficulty, swelling, or vomiting could be a severe allergic reaction.. Go to the ER now: A non-blanching rash (petechiae/purpura) can indicate a serious infection like meningitis. This needs immediate evaluation.. Call your pediatrician now: This rash needs a same-day evaluation by your pediatrician..
When should I call the doctor about baby rash?
Call during office hours: This is worth a call to your pediatrician, but likely not urgent..
When can I monitor rash at home?
Many rashes in babies are harmless - eczema, baby acne, heat rash, and drool rash are very common..

Bottom line

Most cases of rash in babies can be managed at home with monitoring. Seek emergency care if you notice call 911 - possible anaphylaxis. When in doubt, call your pediatrician.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

All content follows our editorial policy and is reviewed against published clinical guidelines.

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