<prompt> Catastrophic reaction is feature ofDementiaSchizophreniaDeliriumAnxiety  <response>: Dementia is a chronic organic mental disorder. A catastrophic reaction is seen in dementia when beyond confronted with an assignment which is beyond the residual intellectual capacity, patient may go into a sudden rage. Ref: a sho textbook of psychiatry, Niraj Ahuja, 7th edition, pg no.22 