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Living with Benign angiitis of the central nervous system

A form of blood vessel inflammation in the brain and spinal cord that begins with sudden symptoms.

Understanding Benign angiitis of the central nervous system

Benign angiitis of the central nervous system is a form of vasculitis (blood vessel inflammation) in the brain and spinal cord with a benign course.

It starts suddenly with nervous system symptoms. These are usually a severe headache and/or a focal neurologic event (a problem tied to one part of the nervous system).

Signs & symptoms

GARD describes sudden nervous system symptoms, most often:

  • Severe headache
  • Sudden problem tied to one part of the nervous system

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
What tests are used to confirm this diagnosis?
What does a benign course mean for my follow-up care?
Which specialists should be involved in my care?

Quick facts

GARD doesn't describe a cause for this condition yet.

Also known as: bacns

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Benign angiitis of the central nervous systemGARD ID 8704 · 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

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