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