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Living with Hereditary cavernous hemangioma of brain

A rare inherited condition with clusters of enlarged blood vessels in the brain that may cause seizures or bleeding.

Understanding Hereditary cavernous hemangioma of brain

Hereditary cavernous hemangioma of the brain is a rare condition with closely grouped, enlarged blood vessels, called a cavernous malformation.

Some people have no symptoms. Others can have seizures, headaches, weakness or numbness in one area, or bleeding in the brain. It can appear at any time in life.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Seizures
  • Headache
  • Bleeding in the brain
  • Muscle weakness
  • Numbness or pins and needles
  • Raised pressure inside the skull

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 brain and nervous system specialists and genetic 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

    Alliance to Cure Cavernous Malformation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: Alliance to Cure Cavernous Malformation
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 Alliance to Cure Cavernous Malformation
  • 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
Should my family have brain imaging or genetic testing?
How often should the malformations be monitored?
Which symptoms should send me to urgent care?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant

GARD says changes in genes (also called variants) cause this condition. It is autosomal dominant, so one changed copy of the gene is enough.

GeneticNeurological

Also known as: familial brain cavernous angioma; familial brain cavernous hemangioma; familial cerebral cavernoma; familial cerebral cavernous malformation; famililal cerebral cavernous malformations; hereditary brain cavernous angioma

Patient organizations

Source: NIH GARD · Hereditary cavernous hemangioma of brainGARD ID 13641 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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