Just wanted to share, in case there are other mummies who haven't tried gloves.
DS1 had pretty bad eczema, controlled to some degree by steroid creams and emollients. One of the main problems we've been having is him scratching until he bleeds, resulting in scabs, which itch, etc etc. The scabs often get infected.
I got some tubifast gloves from Boots - I had to specially order the child size small - they cost £9.25 (although Boots said they were prob available on prescription.)
DS1 has been wearing them to bed for a few nights now and they are really helping - scabs / sores look better and less blood on sheets / pyjamas.
Hope this info helps someone else