My 33 month had a rash about a month ago.doctor said its measles.got antibiotic and calamine lotion.now the rash if back.could this be an allergy?

Hard to tell: Measles is caused by a virus and can cause high fever, a rash on the face that spreads, and irritation of the eyes and mouth. It is not too common due to widespread immunizations in most countries. If your child has a rash again, it is unlikely to be measles. He should be seen by a doctor to figure out what he has.

Rashes: Rashes are not able to be diagnosed over the computer unfortunately, so it is best you have it evaluated in person by a health care provider. Good luck.