Rare neuropsychiatric syndromes at the interface of neurology and psychiatry: a narrative review of diagnostic pitfalls and clinical lessons. - Bharti, Richa; Sharma, Sunali; Jha, Prakash; Yadav, Somya; Kaur, Manpreet; Phougat, Jyoti; Bharti, Vijaya (Journal of Rare Diseases, 2026)