Synonyms for Psychotic:

adj.

insane (adjective)
blithering, unbalanced, nutty, feverish, lunatic, hysterical, demented, deranged, neurotic, delirious, irrational, mad, frenzied, berserk, crazy, brain-sick, babbling, psycho, kooky, batty, maniacal, schizoid, insane, psychopathic, Crack-brained.
lunatic (adjective)
Fiendish, nutty, crackpot, crazy, mad, kooky, neurotic, lunatic.
mentally deranged (adjective)
demented, unbalanced, insane, lunatic, psycho, crazy, psychopathic, mad.

n.

anorexic, case, the critical list, bed-blocker, depressive, agoraphobe, asthmatic, diabetic, consumptive, amnesiac. lunatic (noun)
nut, crank, maniac, kook, psychopath, madman, fiend.
mentally ill (noun)
confused, bipolar, diminished responsibility, depressed.
psychotic (noun)
psychotic person, psycho, insane.

Other synonyms:

Other relevant words:
asthmatic, depressed, psychopathic, case, consumptive, anorexic, amnesiac, confused, depressive, agoraphobe, bipolar, diabetic, bed-blocker, psychotic person.