Suddenly gets angry and attempt suicide.

My wife was without any issue or a small issue e gets very much angry and attempt to suicide and attempt to fight, attempt to murder and quarrel with me at least 3 to 4 days and don't eat threat me divorce speaking loudly very bad language to me and my mother. When she gets angry she hits her forehead with her hand and bite teeth. If her one-year baby is crying more than five minutes she suddenly gets angry and want harm the baby. She always thinks no one like her, everyone is talking against her. Without any fault she blames me and others. Without any reason some time she gets silent and also crying, feeling sadness, loudly speaking very bad language. Not understand any matter and not listening my advice or other good advice also doctor advice and not take medicine. When she gets angry four to five day she doing this type of things then get normal 8 to 10 days. After 8 to 10 days without any reason she again gets angry and doing all above work angry, attempt to suicide etc. please ad