standongrace,

I do agree with Lee and tinyrabbit. There are several unknown factors that make this a difficult Q for me to answer.

Sometimes, a little education can be a dangerous thing. It's one thing if you have personal experience with the mental disorder in Q. If you're simply basing your opinion on an article you read or movie, that's when the best advice would be to tread lightly. Maybe you are right, and your friend does need help for the disorder in question...it would come across the best if you have personal experience, a lot of education on the subject, and a good relationship with your friend. That's when he/she would be most likely to be open to your concerns, if presented in a knowledgeable and understanding way.

Hope that helps ~ best wishes to you & your friend!