Thaniyavarthanam

Thaniyavarthanam Malayalam is a 1987 Malayalam drama film written by A. K. Lohithadas and directed by Sibi Malayil. It stars Mammootty, Thilakan, Mukesh, Saritha, Asha Jayaram, Philomina and Kaviyoor Ponnamma in the lead roles. The story revolves around a family whose male members have a history of lunacy. School teacher Balan Mash Mammootty has an uncle who is mentally ill. It is believed that this illness is hereditary. After the death of the uncle, society starts judging and evaluating Balans every move and eventually deems him to be mentally ill.

One night changes it all, when Balan has a nightmare. People start suspecting Balan of following the footsteps of his uncle into madness because Balans uncle Babu Namboodiri fell mentally ill with a nightmare.Now Balans community evaluates each and every move he makes he is deemed a lunatic and his actions are misinterpreted. Eventually his family joins the gang and he is sent to the asylum. The doctor declares him sane. But society doesnt agree. Helpless, Balan plays mad. Ultimately, Balans mother Kaviyoor Ponnamma poisons him to free him from the world. ........

Source: Wikipedia