Schizophrenia? Hallucinations, Delusions, Disorganised thinking.
With a touch of bipolar disorder? unusual shifts in mood, ranging from extreme highs (“manic” episodes) to lows (“depressive” episodes). A person who has bipolar disorder also experiences changes in their thinking, behavior.
Edit: Oh, I forgot OCD tendencies, also. - common, chronic, and long-lasting disorder in which a person has uncontrollable, reoccurring thoughts ("obsessions") and/or behaviors ("compulsions") that he or she feels the urge to repeat over and over.
And narcissistic personality disorder (NPD) - Regularly upset other people, Think they are always right, Crave attention and admiration, Exaggerate their talents and achievements, Talk about themselves A LOT, Have wide, fast mood swings, Have a hard time taking others’ feelings seriously, Want to win, whatever it takes