Koirala, Naba RajSharma, Vidhya DevKhalid, AbdulNepal, Mahendra KPradhan, Sudarshan NPokharel, Anupam2026-07-212026-07-212000https://hdl.handle.net/20.500.14572/6992Abstract The partial deletion of short arm of chromosome 5, which is known as Cri du Chat syndrome, although rare is a major cause of mental retardation in children. This case report describes the cognitive and behavioural profile of a six-year old boy who displayed evidences of severe mental retardation, behavioural problem and seizure disorder. Keywords: Cri du Chat, deletion, chromosome, epilepsyen-USCri du ChatdeletionchromosomeepilepsyArticle