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. Author manuscript; available in PMC: 2024 Apr 4.
Published in final edited form as: Psychiatr Clin North Am. 2020 Jun;43(2):305–330. doi: 10.1016/j.psc.2020.02.009
IDIOPATHIC ILLNESS “ORGANIC” ILLNESS
• Depression
• Short-lived mania
• Psychotic episodes with organized delusions
 • Mood congruent
 • With schizophrenic features
• Relative paucity of cognitive deficits
• Relative paucity of neurological signs
• Apathy without depression
• Impulsivity without mania
• Aggressiveness without mania or delusional thinking
• Social regression without thought disorganization
• Confabulatory thinking
• Incongruency between affect and mood
• Cognitive deficits
• Focal or diffuse neurological signs