<unk>  is a form of inflammation affecting the blood vessels caused by the deposition of abnormal proteins called cryoglobulins in the blood vessels, in patients affected by mixed<unk>  (type 2 and 3), since simple or type 1<unk>  does not cause complement activation (but a hyperviscosity syndrome only).<unk>  affects the skin and causes a rash in roughly 15% of people with detectable circulating cryoglobulin proteins. Additionally, the kidneys may be affected by this form of vasculitis resulting in membranoproliferative glomerulonephritis. Fevers, painful muscles and joints, and peripheral nerve damage are other common manifestations of<unk> . Due to deposition of complement (in particular, C4), low levels of circulating complement factors may be seen.
Cryoglobulinemic vasculitis
Lupus vasculitis
Systemic vasculitis
IgA vasculitis
Rheumatoid vasculitis
Livedoid vasculitis
Urticarial vasculitis
Bullous small vessel vasculitis