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Living with Steroid-responsive encephalopathy associated with autoimmune thyroiditis

A brain condition, mostly in adults, that causes confusion, behavior changes, and seizures along with thyroid inflammation.

Understanding Steroid-responsive encephalopathy associated with autoimmune thyroiditis

Steroid-responsive encephalopathy associated with autoimmune thyroiditis affects the brain and how it works.

It occurs mainly in adults and affects females more than males. It is linked to Hashimoto's thyroiditis, but how the two are related is unclear. Doctors diagnose it from symptoms, an exam, and lab tests, and more common conditions may need to be ruled out first. It can begin at any time in life.

Signs & symptoms

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

  • Confusion
  • Behavior changes
  • Trouble thinking clearly
  • Seizures
  • Hallucinations or paranoid thoughts
  • Underactive or swollen thyroid

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, genetic specialists and hormone 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 Hashimoto's Encephalopathy SREAT Alliance may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Autoimmune Association, Autoimmune Encephalitis Alliance, Hashimoto's Encephalopathy SREAT Alliance
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
What tests help confirm this diagnosis?
Which other conditions need to be ruled out?
How should my thyroid be monitored?

Quick facts

Symptoms usually startany time in life

GARD says the exact cause is not known but may involve an abnormal immune or inflammatory response.

GeneticNeurologicalEndocrine

Also known as: hashimoto encephalitis; sreat; sreat - steroid-responsive encephalopathy associated with autoimmune thyroiditis

Patient organizations

Source: NIH GARD · Steroid-responsive encephalopathy associated with autoimmune thyroiditisGARD ID 8570 · 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 Steroid-responsive encephalopathy associated with autoimmune thyroiditis.

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