<unk>  <unk>  is a systemic necrotizing vasculitis that typically affects the medium (and occasionally, small-sized) muscular arteries. The Chapel Hill International Consensus Conference (CHCC) has differentiated<unk>  from microscopic polyangiitis which primarily affects small vessels . The diagnosis of<unk>  is challenging due to of lack of a serological marker, and lack of specific histological characteristics.<unk>  unlike most other vasculidities is not Antineutrophil Cytoplasmic Antibodies (ANCA) positive .<unk>  is a rare disease and often affects multiple organs but strikingly,<unk>  does not affect the lungs. The organs commonly affected by<unk>  include the kidneys, skin, joints, muscles, nerves, and gastrointestinal tract.
While it often has a multisystem presentation at diagnosis, variants like single-organ disease and cutaneous-only<unk>  do occur as well.<unk>  has been associated with hepatitis B and C virus infection.
Polyarteritis nodosa
Buerger's disease
Takayasu's arteritis
Livedoid vasculitis
Microscopic polyangiitis
Arteriosclerosis obliterans
Hypersensitivity vasculitis
Granulomatous angiitis