It is always difficult to decide about the cause of a rash without being able to see your son. His rash does sound like an allergic rash probably one called urticaria. Sometimes this rash is known as hives.He is probably allergic to somehing in the waistband of his nappy such as the plastic or possibly latex if there is elastic there.Change the brand of his nappy. Apply a thin layer of Mylocort Cream twice daily to the rash. If the rash has not disappeared by 5 days please write to me again.
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