My daughter also had the same symptom when she was 1 month old. All doctors (public, private and specialist) treated her with the 1% 類固醇 cream. Get well but it happens again and again over 2-3 months. It becomes more serious, her legs and arms also got 濕疹. The skin becomes thinner and 白左一達 when we put 類固醇 cream.
Mostly she drinks breast milk. Sometimes she feeded with milk powder, she also 轉食低敏能恩 at that time but no help.
My friend has introduced a Chinese Herbalist doctor to me and my daughter becomes beauty now. I treated her with the Chinese medicine for around 2-3 weeks.
When the wealther change, the baby will have the symptom again but not serious, she is now only put on AI cream and the symptom gone.
I have introduced the Chinese Herbalist doctor to few Mama and their babies all get well. If you are interest to know this doctor, please PM me.