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Childhood Rashes: When to Seek Urgent Help

Key Information

Most Rashes are Harmless: Although worrying, most childhood rashes are caused by common viruses and clear up on their own.
The Glass Test (Meningitis Check): Press a clear glass firmly against the rash. If the spots do not fade under pressure and remain visible through the glass, this is a medical emergency.
The Red Flags: Seek immediate help if your child has a rash and any serious symptoms such as breathing difficulty, unusual drowsiness, seizures, or a weak high-pitched cry.

You must seek urgent medical attention if your child has a rash and any of the following:

Breathing Problems: They are struggling to breathe. Look for the chest or stomach sucking in with each breath, or listen for grunting noises.
Behaviour Changes: They are floppy, drowsy, very difficult to wake up, or unresponsive.
Fits: They have a seizure or convulsion.
Unusual Cry: A weak, high-pitched cry that sounds different from their normal cry.

Immediate Emergency (Call 999 or go to A&E):

If you see a non-fading rash (failed glass test) or any of the red flags listed above, do not wait. Seek emergency help immediately.

Non-Urgent Concern:

If your child does not have these red flags but has a rash or fever and you are worried, please contact us for advice or call NHS 111.

If you are unsure whether your child needs urgent care, it is always safer to ask for advice.

To see photos of common childhood rashes (such as chickenpox, measles, or heat rash), please visit the NHS visual guide.

Last reviewed: 30 December 2025
Next review due: 30 December 2028