[Autoimmune encephalitis in psychiatric institution (clinical case)]

Area of Science:

• Neuropsychiatry
• Immunology
• Neurology

Background:

• Molecular neuropsychiatry aims to identify biomarkers for mental disorders.
• Autoimmune encephalitis (AE) frequently manifests with psychiatric symptoms, affecting up to 60% of patients.
• Early psychosis can be a challenging diagnostic presentation.

Observation:

• A clinical case of a 31-year-old patient with GABAb-associated AE presenting with acute polymorphic psychosis is described.
• The patient received timely diagnosis and treatment for AE, resulting in a positive clinical outcome.

Findings:

• The case highlights the significant overlap between psychiatric presentations and autoimmune neurological conditions.
• Prompt diagnosis and intervention in AE are crucial for effective management and recovery.

Implications:

• Antineuronal antibody testing in cerebrospinal fluid (CSF) and serum should be considered for patients experiencing their first acute psychotic episode, especially if "red flags" or atypical features are present.
• Integrating immunological assessments into psychiatric evaluations can improve diagnostic accuracy for conditions like AE.
• This approach aligns with the goals of molecular neuropsychiatry by identifying biological substrates for psychiatric symptoms.