I'm sorry you are feeling so uncomfortable. Sometimes it takes a while to see a rheumy and that can be such a miserable time. Could you ask the Dr who diagnosed you if s/he can give you prednisone or something to bring down the inflammation? (My guess is that the itching is coming from nerve inflammation, that might also explain the numb hand.) In the meantime, try ibuprofen before bed.
How did s/he diagnose you? Generally diagnosis is done by a rheumy as they are the experts in separating one auto-immune disease from another - there are several with overlapping conditions - a gp or internist is just not very well-versed in the auto-immune diseases.
Lynnwood, Lupus & Sjogren's ModeratorDIAGNOSING-LUPUS & LUPUS-RESOURCES
"Life is far too important to be taken seriously" - Oscar Wilde