我儿子就是这样。 过敏体质。 特别到冬天全身痒, 不能入睡。医生建议只能泡澡(要用特殊的aveno cream body wash and aveno powder that soak into water), 轻轻抹干, 擦上vaseline. Allergy doctor aslo presicribed two kinds of medicine: one is to put on when skin rash gets seriously (itchy and red), the other one is a special cream lotion to moisture the skin.
I found out that taking a bath helped a lot with aveno creamy wash and powder.
Hope this will help you.