My son skin has some white patches here and there which looks like skin peeling and it’s lighter than his shade. Is that skin allergy? I Changed his soap couple of days ago is that the reason

A. it can due to any vitamin deficiency, In case of the patches patches are due it can even be birth marks it can be fungal infection or worms too then you can use antifungal creams which will work and monitor how it is And if it continues It's good to see your doctor