We do advise on it. However, we do not give a uniform list of prohibitions.

Many people look at a list of 'foods bad for the skin' and restrict a number of things, but restriction without grounds creates nutritional imbalance and lowers quality of life. It is particularly harmful to a growing child.

The way to check it in practice is a record. If you write down for about two weeks what you ate and how things went a few hours later, your own trigger foods become visible. Even where a test is positive, it is often actually fine.

What we generally recommend is about this much: reducing excessive sugar and alcohol, and eating regularly and in variety.

If food allergy is suspected, testing at a dermatology or allergy clinic is the order. Please do not restrict on your own judgement.