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Updated: Mar 22, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
Published on: March 17, 2023
Encephalopathy Associated with Autoimmune Thyroid Disease: A Potentially Reversible Condition
Inês Correia1, Inês B Marques1, Rogério Ferreira2
1Department of Neurology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3000-075 Coimbra, Portugal.
Autoimmune thyroid disease can cause neurological issues like dementia and myoclonus. Early recognition and immunotherapy, such as steroids, can lead to significant patient improvement.
Area of Science:
- Neurology
- Immunology
- Endocrinology
Background:
- Autoimmune thyroid disease (AITD) can present with subtle neurological symptoms.
- These symptoms may include cognitive decline, behavioral changes, tremor, myoclonus, or ataxia.
- Encephalopathy associated with autoimmune thyroid disease (EEAT) is a controversial diagnosis.
Purpose of the Study:
- To report a case of encephalopathy associated with autoimmune thyroid disease.
- To highlight the diagnostic challenges and potential treatments for this condition.
Main Methods:
- Case report of a 61-year-old female patient.
- Diagnostic workup included antibody titers and cerebrospinal fluid (CSF) analysis.
- Treatment involved steroids.
Main Results:
- The patient presented with chronic headache, mood and cognitive disturbances, progressing to dementia with myoclonus.
- High anti-thyroid peroxidase antibody titers and an inflammatory CSF profile were observed.
- Steroid treatment resulted in significant clinical improvement.
Conclusions:
- EEAT is a diagnosis of exclusion with unspecific presentation and undetermined pathophysiology.
- While steroid treatment can be effective, other immunotherapies may be necessary.
- Prompt recognition and treatment are crucial as EEAT is potentially treatable.
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