Husband has mental disorders which were concealed at time of marriage

Hi. I have married one year ago. At that time my husband parents do not tell about their mental health. He has bipolar disorder, schizophrenia, identity disorder,mood swing, depression, anxiety. He behave abnormal after marriage. He became violent soon. He also mentally torcher me after marriage by saying sooo many hurting things. His mom always cover his every point and pressure me to bear all. He is not working and pressures me to do job. He talk with himself, smile alone, say unreal and unusual things as he thought he is not indian. He is Russian but he doesn't know how he came to india in childhood. He says they r not my mom dad, my mom is in canada. His will power is zero due to this. I don't know what to do and can i take divorce on basis of this.