Anger Issues? Delusions? Mood? Personality?

Hi,

I'm here to describe my sister's behaviors and see if anyone can point me in the right direction. Other than calling her my sister, I'm not going to reveal any other contact information.

Before I do, I want you to know that delusions are rampant in my family. Denial and delusions of self perfection are the most obvious. My dad says he's dumb because he ate lead paint chips from the peeling garage door as a child. My part of the family is extremely anti-intellectual and disrespects any sort of advice. I am always on the lookout for any delusions I might have, and frequently ask acquaintances to tell me about anything that comes up, and resolve them. I am the 'black sheep' of the family. I use logic and find excessive emotion to be a mental disorder. In other words, all emotional outbursts are my fault, or due to my own mental illness, not others who try to anger me.

Now, my sister is a whole different story. She's always been very angry, probably because I beat her when we were children, because I thought she was delusional. She has always been non-violent, but you would never know it to be around her. Anyways, she got on some anxiety/depression drugs, which help with the anger issues, but she is still deluded.

What I mean is, she thinks her drugs help her tolerate how mean and unruly everyone around her is. The fact is that it does nothing of the sort. Nobody in our family is the least bit mean to her anymore, and we all "walk on eggshells" when we are around her. When her medicine is working, she compliments everyone on how well they are behaving, even though nobody is behaving differently at all. She comments on how much more everyone is smiling and respectful to each other.
When her medicine is not working, and that is a few days out of the week, she is extra upset. Her children are always misbehaving (not really), and everyone is out to get her. Every joke is a cruel innuendo at her expense, and eventually she just can't take it any longer. She hollers and bellows, she shouts profanities and gets in your face and just tears up your ear drums.
All the while, she insists that she isn't mad, she isn't angry, she isn't yelling, and she is certainly not the one at fault. Finally, when left alone, she begins to weep and tells her husband that everyone thinks she's crazy even though she's not, and that they are the crazy ones and can't get along with her.

One day she rushed at me in a rage, bellowing like a locomotive, and waving her fists. I was sure she was going to attack me, so I defended myself. If everyone hadn't been there to watch, they would have thought I was attacking her, talk about double standards involving gender (I'm male). She decided to move her family out a few days later, dragging her poor husband and kids with her.

I have a few simple questions for anyone who may have read all that. I don't expect any qualified answers, but any little help or tips would be greatly appreciated.

What could this mental disorder be called?
I am sure her drugs aren't working properly, or are not treating the root illness. So what can I do to help her get properly diagnosed?
Her children are exhibiting signs of emotional confusion and learning disorders, certainly due to her anger issues. What should be done to help them develop normally? I don't really want them to be taken away.

Also one of my aunts has the very same illness, undiagnosed.


Thanks