I'm constantly tired with achy joints. i have sores on my back, head & arms that won"t heal.

Get seen: By somebody competent. I'm not going to sugar-coat it. You have one of the vasculitis syndromes until proven otherwise. Even if not, chances are that you are seriously sick. Don't settle until you get a definitive diagnosis. Three of several possibilities are wegener's, churg-strauss and rheumatoid arthritis. Trusting also you do not have endocarditis or tb.