there have been several Tamil films that portrayed mental disorders or used them as backdrops to their stories. Here are a few notable ones:
"Anniyan" (2005) - Directed by Shankar, this film follows the story of a lawyer suffering from multiple personality disorder. The protagonist's different personalities take control of him and lead him to seek vigilante justice against societal evils.
"Deiva Thirumagal" (2011) - This heartwarming film revolves around the story of a mentally challenged man, played by Vikram, who fights for custody of his young daughter after the death of his wife.
"Kaadhal Kondein" (2003) - Directed by Selvaraghavan, this film deals with the protagonist's obsessive-compulsive disorder and his struggles with love and mental health.
"Mouna Ragam" (1986) - Directed by Mani Ratnam, this classic romantic drama touches upon themes of mental trauma and post-traumatic stress disorder in the life of its female protagonist.
"Sethu" (1999) - This film portrays the challenges faced by a man with a violent and disturbed mental condition who falls in love with a doctor.
"Ratsasan" (2018) - While not directly focusing on mental disorders, this psychological thriller features a serial killer who uses a psychological disorder as a disguise, adding an element of suspense and intrigue to the storyline.
Please note that the availability of these films might vary, and there may be newer films released . It's always a good idea to check for more recent movies and reviews to explore Tamil films that deal with mental health themes.