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Living with Anti-neutrophil cytoplasmic antibody-associated vasculitis

A group of conditions causing inflammation of small blood vessels that can affect the kidneys, lungs, and gut.

Understanding Anti-neutrophil cytoplasmic antibody-associated vasculitis

ANCA-associated vasculitis is a group of diseases in which small blood vessels become inflamed and damaged.

The group includes granulomatosis with polyangiitis, eosinophilic granulomatosis with polyangiitis, and microscopic polyangiitis. Signs vary and can affect organs such as the kidney, stomach, intestine, and lung. Skin changes can occur when blood leaks from small vessels under the skin.

Signs & symptoms

GARD doesn't list a symptom list for this condition, but its summary describes these features:

  • Inflammation of small blood vessels
  • Kidney, stomach, intestine, or lung problems
  • Purple spots on the skin (purpura)
  • Hives (urticaria)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include autoimmune and inflammatory disease specialists and lung and breathing specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Global Autoimmune Institute and Vasculitis Foundation may keep lists of experts for this condition.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Lung and breathing specialists (pulmonologists)
Expert care
Expert lists: Global Autoimmune Institute, Vasculitis Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Global Autoimmune Institute and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which of the three types of ANCA vasculitis do I have?
Which organs should be checked regularly?
Which specialists should be on my care team?

Quick facts

GARD says the condition occurs when white blood cells called neutrophils attack small and medium blood vessels. The underlying reason is not clear.

Respiratory

Also known as: aav; anca-associated vasculitis; antineutrophil cytoplasmic antibody (anca) positive vasculitis; antineutrophil cytoplasmic antibody positive vasculitis; antineutrophil cytoplasmic antibody-associated vasculitis

Patient organizations

Source: NIH GARD · Anti-neutrophil cytoplasmic antibody-associated vasculitisGARD ID 13011 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Anti-neutrophil cytoplasmic antibody-associated vasculitis.

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