Our DS caught this last summer (we think on holidy in a swimming pool) and it has been rotten for him. No treatment, multiple visits to GP and a specialist. It is quite sore and itchy. Tried everything.
Anyway, I came across this study (and there are other similar studies about the ingredients seperately) and looked for a cream with collodial oat and zinc in it, turns out Aveeno baby daily care barrier cream has both in. After a month the spots have dramatically reduced.
Hope this helps anyone who has it!