First: identify the type/category of the disorder (anxiety, somatoform, dissociative, mood, schizophrenic, personality, or developmental).

Second: identify the sub category. For example if the individual is suffering from an anxiety disorder is it OCD, PTSD, phobia, panic disorder, or generalized anxiety disorder.

Third: what information provided about the individual helped you make this diagnosis?

Brittany danced into the party and immediately became the center of attention. With sweeping gestures of her arms and dramatic displays of emotion, she boasted about her career as an actress in a local theater group. This confused many at the party, because they all thought she was a school teacher. When she arrived home from the party her husband asked her where she had been, but she couldn't remember.