This cluster of papers focuses on autoimmune encephalitis, particularly the clinical characteristics, diagnostic criteria, and management of conditions such as anti-NMDA receptor encephalitis, paraneoplastic syndromes, and limbic encephalitis. It explores the role of autoantibodies, immunotherapy, and the neurological manifestations of autoimmune diseases. Additionally, it discusses specific conditions like Hashimoto encephalopathy and cognitive impairment associated with these disorders.