My DD gets the type similar to yours aswell as every other "type" of excema. Hers is purely environmental as it only flares up coming into Spring/Summer and stays around till until Winter appears again. During Winter she has the most amazing soft skin, but the last few weeks its become bad again, all scaley, dry and shes back on antihistamine at night to stop the itching. I love Winter for the fact that my DD is not itchy!!
I have tried every single cream/lotion/potion under the sun, but the only creams that keep it under control are Glycerine 10% in Cetomacrogal which I use to keep her moisterurised and the other product I dont have at the moment (script is in at the pharmacy at the mo for some more) but its called something like Coltar. Both of these creams were prescribed by a specialist originally but now I just order the scripts through my doctor cause then its free
Hope that helps