Skip to content
knowrare
HealthSignal
Your condition community

Living with Autoimmune encephalitis

A group of conditions in which the immune system attacks healthy brain cells, causing brain inflammation.

Understanding Autoimmune encephalitis

Autoimmune encephalitis is a group of conditions in which the immune system mistakenly attacks healthy brain cells and causes brain inflammation.

People may have neurologic and/or psychiatric symptoms. Symptoms can come and go but often get worse over days to a few weeks. It may be linked to antibodies against proteins on or within nerve cells, and in some cases to cancer (a paraneoplastic syndrome). It usually occurs in people with no family history.

Signs & symptoms

GARD says symptoms can be neurologic or psychiatric. Examples include:

  • Memory and thinking problems
  • Seizures
  • Abnormal movements
  • Trouble with balance, speech, or vision
  • Psychosis, aggression, panic attacks, or compulsive behaviors
  • Loss of consciousness in some cases

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.

  3. Ask which tests can help

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

  4. Connect with expert centers

    Autoimmune Association, Autoimmune Encephalitis Alliance and Global Autoimmune Institute may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists)
Expert care
Expert lists: Autoimmune Association, Autoimmune Encephalitis Alliance, 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 Autoimmune Association 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 antibody tests do I need?
Should I be checked for an underlying cancer?
Which treatments calm the immune attack?

Quick facts

GARD says the immune system attacks healthy brain cells and may be linked to antibodies to nerve cell proteins. Research on why is ongoing. In some cases it occurs with cancer. It usually occurs with no family history.

Neurological

Also known as: autoimmune encephalopathy

Patient organizations

Source: NIH GARD · Autoimmune encephalitisGARD ID 11979 · 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 Autoimmune encephalitis.

Explore the Autoimmune encephalitis blog

Explore research for Autoimmune encephalitis

Explore actively recruiting Autoimmune encephalitis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Autoimmune encephalitis with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

Powered by HealthSpark, our AI chat helper

I can help you find recruiting Autoimmune encephalitis studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

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

Get Signals for Autoimmune encephalitis

Stay in the loop with community stories and updates from medical researchers.

HealthStoryfor Autoimmune encephalitis

Create a living journal that talks back

HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your Autoimmune encephalitis experiences more deeply and prepare for better conversations with your doctors and care team.

Start your journal

Your journal is private. Sharing your story publicly is a separate choice, made with Share your story above.