Sadma ("Trauma") is a 1983 Indian film directed by Balu Mahendra and stars Kamal Haasan and Sridevi with music composed by Ilayaraaja. The picture tells the story of Nehalata (Sridevi), a young woman who regresses to childhood after suffering a head injury in a car crash. Lost, she ends up trapped at a brothel before being rescued by Somu (Kamal Haasan), a lonely school teacher who falls in love with her.
The film is a remake of 1982 Kannada film Maanasa Sarovara. Sadma won much critical acclaim but was not a commercial success. However over the years it has been hailed as a modern masterpiece and has become a cult classic and the performances of Kamal Hasan and Sridevi have been regarded by many as their best ever. Sridevi's autistic child-woman performance won her great praise and Best actress Filmfare Award and National Award nomination as well as receiving State awards, Kamal's performance in the film's famous climax scene won him the National Award in the Tamil version.