I do not know what exactly is my mom's sickness but I can relate it closely to bipolar disorder.She rants almost for the whole day if she starts ranting and screaming and repeating the same things over and over again...only complaining at all times.I do agree dad hasn't been the best but she makes small mistakes look like huge and waits for a chance to start abusing and even uses very hurting words and remarks which make me extremely negative, depressed and feel suicidal.i cannot ever think of asking her to seek any medical help as that will give her an opportunity to get back to me for being bad to her for the next few weeks. please help me in dealing with her, i am about to be married and this is affecting my relation with my boyfriend and i have started getting hyper in our relation also.Please help.