As someone who is diagnosed with Asperger's syndrome, ADHD, DCD, post-traumatic stress disorder, has a history of depression, anxiety, psychosis, and drug/alcohol abuse, and is going to be evaluated for possible schizophrenia, I've been curious about what other people's thoughts and experiences are with RPing characters with mental illnesses.

What do you think of using mental illness as an element in characters that you RP?