Rash After the Measles Vaccine

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Overview

A small number of children—about 5%—develop a pink rash after getting the measles vaccine. This reaction is normal, harmless, and not contagious.

Health Information

Symptoms

Symptoms usually begin 5-12 days after the vaccine and last for 2-3 days.
Rash
- Small pink spots. Some of the spots might come together to form larger red areas.
- On both sides of the body.
- Usually, on the chest, stomach and back.
Fever
- Usually between 101 F and 103 F (38.3 C and 39.5 C).
Lack of other symptoms
- Unlike an actual measles infection, children who have symptoms after receiving the immunization are less likely to also have coughing, runny nose, watery eyes, red eyes, or spots inside their mouth.

Why This Happens

The rash and fever are normal immune responses to the vaccine.
They show that your child’s body is building protection against measles.
Not all children get a rash or fever—the vaccine still works even without symptoms.
This reaction is NOT an allergy.

Care at Home

Rash

The rash is harmless.
It is not contagious and cannot spread to others.
No creams or medicines are needed.

Fever

You may use acetaminophen or ibuprofen to help your child feel comfortable.
Make sure your child drinks plenty of fluids and gets rest.
Learn more about fevers here.

School and Childcare

Your child does not need to stay home.
The rash cannot be spread to other children.

When to Call Your Doctor

Contact your child’s healthcare provider if:

Fever lasts more than 3 days.
Rash lasts more than 4 days or there are signs of skin infection.
You are worried your child needs to be seen.
Your child’s symptoms get worse.

📚 References

This content was adapted from American Academy of Pediatrics Patient Education handouts, HealthyChildren.org and Children’s Hospital of Philadelphia Vaccine Education Center.

Reviewed by AR DO, Patient Education Committee.