Journal
MEDICINE
Volume 100, Issue 4, Pages -Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MD.0000000000024384
Keywords
anti-IgLON5 disease; brain magnetic resonance imaging; immunotherapy
Categories
Funding
- National Natural Science Foundation of China [81400967, 81771287]
- Chongqing Health Commission [2019QNXM039]
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Anti-IgLON5 disease is a progressive antibody-associated encephalopathy with symptoms such as gait instability, dysarthria, and oculomotor abnormalities. MRI findings are usually unremarkable, and the disease shows poor responsiveness to immunotherapy.
Rationale: Anti-IgLON5 disease was first described as a progressive antibody-associated encephalopathy, with multiple non-specific clinical symptoms including sleep dysfunction, bulbar symptoms, progressive supranuclear palsy-like syndrome, cognitive impairment, and a variety of movement disorders. This newly discovered disease presents with unremarkable or unspecific brain magnetic resonance imagings (MRI), and have poor responsiveness to immunotherapy. Patient concerns: In this case, a 37-year-old man presented with 4-day history of gait instability, dysarthria, and oculomotor abnormalities. The initial neurologic examination revealed mild unsteady gait, subtle dysarthria, and left abducent paralysis. Diagnosis: The patient was diagnosed with anti-IgLON5 disease, based on clinical features and positive anti-IgLON5 antibodies in serum. Interventions: Initially, the patient was treated with high dosages of methylprednisolone and immunoglobulins. Outcomes: The symptoms of patient rapidly improved after high-dose intravenous methylprednisolone and immunoglobulins. Conclusions: In this paper, we report a new case of anti-IgLON5 disease with major symptoms of gait instability, dysarthria, and oculomotor abnormalities, with distinctive brain MRI findings, and responsive to immunotherapy.
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