Splinter hemorrhages and urticaria like rashes

I have been experiencing red rashes similar to hives on the palms of my hands and bottom of feet. Along with this I have been experiencing occurrences of splinter hemorrhages under my nails. This has been ongoing for about the past 12 months. I have seen a cardiologist and endocarditis has been ruled out. I have seen a multiple dermatologists who can't seem to diagnose a cause for this (biopsy has been done on the nodes on my hands with inconclusive results, but osler's nodes and janeway lesions were ruled out). Results of biopsy stated perivascular dermatitis (which my Dr said basically means a "rash"). I have seen a rheumatologist who has ruled out auto-immune and vasculitis disorders. Bloodwork revealed an slightly elevated white blood count, but a hematologist indicated nothing to worry about. I am at a loss of what to do next. Any help?

Not an easy task to do, but find a new specialist and be tested for Antiphospolipid Syndrome. Considered rare, but is not. The splinter hemorrages and rash are a indicator.. I have this autoimmune disease and I dedicate much time to awareness of it Many doctors have never heard of it, but it is very real. Men and women young and old have this. I am including a site for you to explore.