Criteria | Specifics | Needed for the diagnosis |
Major criteria | Urticaria for more than six months | The patient must have both major criteria. |
Hypocomplementemia | ||
Minor criteria | Venulitis of the dermis (established via biopsy) | The patient must have at least two of the minor criteria. |
Arthralgia or arthritis | ||
Mild glomerulonephritis | ||
Uveitis or episcleritis | ||
Recurrent abdominal pain | ||
Positive C1q precipitin test by immunodiffusion with an associated suppressed C1q level |
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