A rare autoimmune disease characterized by recurrent<unk> (nettle rash), first described in the 1970s. There is no defined paradigm for the syndrome aetiology and severity in progression. Diagnosis is confirmed with the identification of at least two conditions from: venulitis on skin biopsy, arthritis, ocular inflammation, abdominal pain or positive C1q antibodies to immune complexes. It is this last category, anti-C1q antibodies, that all HUV patients test positive for. In vitro experiments and mouse models of the disease have not thoroughly determined the link between these antibodies and the disease, even though the link is so pronounced.
Urticarial vasculitis
Livedoid vasculitis
Lupus vasculitis
Rheumatoid vasculitis
Cutaneous small-vessel vasculitis
Systemic vasculitis
Golfer's vasculitis
Vasitis nodosa