hiv patient with elevated esr rate (146) and crp but a normal wbc. Recently changed HIV meds because of drop in CD4 count rom 380's to 180's. Kidney, heart, and other systems are all normal. BP 110/72. Denies fever. Bilateral lower leg swelling that is painful. Patient feels tingling and numbess. Purplish/Red discoloration. No history of immune disease, no obvious signs of infection, what is causing this?