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Hashimoto's encephalopathy presenting as pseudobulbar palsy
Gokcen Oz Tuncer1, Serap Teber2, Muhammed Gültekin Kutluk2
1Department of Pediatric Neurology, Faculty of Medicine, Ankara University, Ankara, Turkey. gokcenoz@hotmail.com.
Summary
Hashimoto's encephalopathy (HE) is a rare autoimmune condition. This case highlights HE as an unusual cause of pseudobulbar palsy (PSP), emphasizing early anti-TPO antibody detection.
Area of Science:
- Neurology
- Immunology
- Autoimmune Diseases
Background:
- Hashimoto's encephalopathy (HE) is an autoimmune disorder presenting with diverse neurological and psychiatric symptoms.
- Pseudobulbar palsy (PSP) is typically caused by demyelinating, vascular, or motor neuron diseases, or congenital malformations.
Observation:
- A 14-year-old male presented with right-sided weakness, dysphagia, speech disorder, and behavioral changes.
- Brain MRI revealed abnormalities in the temporal, insular, amygdala, and parahippocampal regions.
- Initial autoimmune encephalitis workup was negative, but high anti-thyroperoxidase (anti-TPO) antibody levels indicated HE.
Findings:
- The patient was diagnosed with HE and treated with high-dose steroids, leading to symptom resolution.
- Recurrences of symptoms were observed but responded effectively to steroid therapy.
- This case represents a rare instance of PSP developing secondary to autoimmune encephalitis.
Implications:
- This case underscores the critical importance of screening for anti-TPO antibodies in patients presenting with PSP, especially those with suspected autoimmune encephalitis.
- Early diagnosis and treatment of HE can lead to significant neurological recovery and prevent long-term disability.
- Further research is warranted to understand the mechanisms linking HE to PSP and to optimize management strategies.