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Living with Acute hemorrhagic leukoencephalitis

A rare, intense attack of swelling in the brain and spinal cord that can also cause bleeding in the brain.

Understanding Acute hemorrhagic leukoencephalitis

Acute hemorrhagic leukoencephalitis (AHLE) is a rare form of acute disseminated encephalomyelitis, with swelling in the brain and spinal cord.

The attack damages myelin, the protective covering of nerve fibers. It may also cause bleeding in the brain, which can damage the white matter. Symptoms usually come on quickly.

Signs & symptoms

Symptoms vary from person to person. GARD's summary says they may include:

  • Fever
  • Stiff neck
  • Tiredness (fatigue)
  • Headache
  • Nausea and vomiting
  • Seizures

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.

  4. Connect with expert centers

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: Global Autoimmune Institute
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
  • 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 showed swelling or bleeding in the brain?
Which specialists should be part of care?
What recovery support is available after an attack?

Quick facts

GARD says the exact cause is unclear. AHLE usually follows a viral or bacterial infection, or less often, vaccination for measles or rabies.

Also known as: acute haemorrhagic leucoencephalitis of weston hurst; acute hemorrhagic encephalomyelitis; acute hemorrhagic leukoencephalitis of weston hurst; acute necrotizing hemorrhagic leukoencephalitis; ahl; hurst's disease

Patient organizations

Source: NIH GARD · Acute hemorrhagic leukoencephalitisGARD ID 8629 · 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 Acute hemorrhagic leukoencephalitis.

Explore the Acute hemorrhagic leukoencephalitis blog

Explore research for Acute hemorrhagic leukoencephalitis

Explore actively recruiting Acute hemorrhagic leukoencephalitis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Acute hemorrhagic leukoencephalitis with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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