have you tried the Wet Wrapping Technique?
It consists of applying wet wraps or garments and ointments on dry itchy skin.
See the following YouTube video for more details:
Try our Natural Olive Baby Bottom Butter, contains Organic Essential oil of Chamomile and Vanilla. Works wonders on dry skin, bums and Eczema! All Natural ingredients.
My son is 6 now, hes been having is since he was about 1 year old. its gotten better through out the years. he doesnt get it as bad now but i bath him with special body bath soap and after i always but lotion for the eczema.