Welcome to HCM.
Thanks for writing in.
and lupus are closely related autoimmune connective tisse disorders.Even overlapping syndromes of lupus with RA i.e. RHUPUS are known to occur.
You can undergo ANA,dsDNA, Anti smith antibody levels in blood for confirmation.
seems to be right.
Topical and oral corticosteroids
can help you a lot in controlling eczema
and RA both.
Hope this helps.
Wishing you good health.