An Unusual Case of HCV Negative Cryoglobulinemia Presenting as Symmetrical Peripheral Gangrene.

Cryoglobulins are monoclonal or polyclonal immunoglobulins that undergo reversible precipitation at low temperatures. Cryoglobulinemia is associated with HCV infection in more than 90% cases, the remaining 10% being called as Essential Cryoglobulinemia which is generally associated with a severe course and suboptimal response to conventional therapies. As the digital vessels are more prone to colder temperatures, hyperviscosity in those vessels can initiate local thrombosis and may manifest as ischemic ulceration and gangrene. We report here a very unusual case of HCV negative cryoglobulinemic vasculitis presenting as symmetrical peripheral gangrene of fingers and toes.