Different Mental Disorders?

Hi, I'm writing a fiction book and I want to develop some charactars by giving them several mental disorders so can you tell me about the names of some, and symptoms. It would even be great if you could give me a link to a site on mental disorders. I know I'm being vague :) but it's fun!

The main charactar is female, she's very out of touch with reality, passive and goes into denial about some things. She's friends with a teacher of hers and that's who's family I'm making insane, he is too.
The teacher is a male, his wife's five months pregnant and they have two kids. One's a girl the age of the main char, and a boy who is older but I'm not sure by how much. The teacher has no boundaries. Neither does his wife but she's also very strange, and quirky. She has LESS boundaries then him.
The daughter I didn't develop too much but the son in completely psychotic and has no problem hurting someone allot more then they've hurt him for revenge- like murder.
So, thanks for your help.

try here...

In the last link...look under the heading of "DSM Group" for a breakdown of mental disorders.

borderline personality disorder is a fun one - impulsive actions, rapidly shifting moods, and chaotic relationships. The individual usually goes from one emotional crisis to another. Often there is dependency, separation anxiety, unstable self-image, chronic feelings of emptiness, and threats of self-harm (suicide or self-mutilation).

Narcissistic personality disorder - inflated sense of self-importance, need for admiration, extreme self-involvement, and lack of empathy for others. Individuals with this disorder are usually arrogantly self-assured and confident. They expect to be noticed as superior.

I would honestly just look around the source sited, unless you can get your hands on a copy of the DSM.

anti social, multiple personality, depression, insomnia, anxiety, paranoia, tell me if there are more.
Anti social - cant talk to people well
multiple personality- you should knwo it
depression- no mood for everything
insomnia- cant sleep
anxiety- agigated all the time, trembling
paranoia- seeing things.

symptoms: headache, sleep less, tired all the time, itchy rashy skin, antibody deficient (easier to get sick), may lead to jaundice (yellowing of the skin and eyes), sore foot, hands whole body, dehydration, constipation, diarhea, liver problem, high blood pressure, low blood pressure, anything unhealthy.