4A44.91 Hypocomplementaemic urticarial vasculitis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Vasculitis accompanied by urticaria and hypocomplementemia affecting small vessels (i.e., capillaries, venules, or arterioles), and associated with anti-C1q antibodies. Glomerulonephritis, arthritis, obstructive pulmonary disease, and ocular inflammation are common.(Chapel Hill Consensus Conference, 2011)

synonyms

• Hypocomplementaemic urticarial vasculitis
• Anti-C1q vasculitis

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