My brother who has Bi-polar has become someone I no longer know. My mother is 89 and I've been taking care of her for many years while trying to work a hectic job. My brother used to tell me what a great job I'm doing and even help out some. In the past 2 years he has become everything I have read about regarding narcissistic disorder. We used to be close and I have leant him a lot of money over the years. He now comes over and criticizes everything I do. Tells me how to do things and wants money from my mother. My heart is broken and I can't talk to him without an argument. Please help!