Kurt Gödel, one of the best mathematicians of all time had the delusion that he was about to be assassinated via poison in his food. He would only accept to eat food prepared by his wife, Adele.

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Hyperthymesia is a condition that allows a person to spontaneously recall with great accuracy and detail a vast number of personal events or experiences that go years and decades into the past.

الصراحة مليت، مالي خلك اسولف عنهن
بس المهم، هن مترابطات وأكو أبحاث شافت علاقة بين الحالتين.

There's a House MD episode on this condition. It's interesting.

You might also see that in autistic spectrum though it’s extremely rare (there is a whole tv show about it)

True, but in autism spectrum you'll see superior visual or auditory memory, not autobiographical

That's the weird thing about hyperthymesia: people with the condition do not have a superior memory. They simply remember every personal event that occured to them, like ever.

*من البوت*

Positive symptoms of schizophrenia respond well to most traditional and atypical anti-psychotic agents. While negative symptoms respond better to atypical than to traditional anti-psychotics.

DSM-V definition of a mental disorder:
A mental disorder is a syndrome characterized by clinically significant disturbance in an individual's cognition, emotion regulation, or behavior that reflects a dysfunction in the psychological, biological, or development processes underlying mental functioning. Mental disorders are usually associated with significant distress or disability in social, occupational, or other important activities. An expectable or culturally approved response to a common stressor or loss, such as the death of a loved one, is not a mental disorder. Socially deviant behavior (e.g. political, religious, or sexual) and conflicts that are primarily between the individual and society are not mental disorders unless the deviance or conflict results from a dysfunction in the individual, as described above.