"My son has started BLW and has some patches. Is it an allergic reaction or eczema?"

It is difficult to determine from a description whether the rash is due to an allergic reaction or eczema. However, some signs that may point towards an allergic reaction include the rash disappearing quickly or spreading rapidly. If the rash persists for several days, it could be more likely to be eczema. It is important to monitor what your child has eaten recently to identify any potential triggers and avoid giving them those foods for a few weeks.