All are seen in organic psychosis except -
The presence of the following features requires a high index of suspicion for the presence of organic mental disorder (organicity) :-


First episode, sudden onset or older age of onset.
History of drug and/or alcohol abuse.
Concurrent medical or neurological illness.
Neurological symptoms or signs :- seizures, impairment of consciousness, head injury, sensory or motor disturbances, or soft neurological signs.
Cognitive impairment :- confusion, disorientation, memory impairment, impaired concentration & attention, impaired consciousness.
Visual or other non-auditory (olfactory, gustatory or tactile) hallucinations
Complex delusions
Disorientation in place, time & person
Clouding of consciousness
Hallucination
Normal common knowledge