**Synonyms:** madness of secondary description.
Delusion is an illogical explanation of an act or action as a response to real life circumstances. Delusion arises as a momentary fantasy that cannot be explained or proven. Extravagance can be tactful, extravagant, comical and outwardly harmless. Psychiatrists, psychologists and ordinary people encounter delusions every day when they see a strange or unusual reaction. Verbal delirium is especially dangerous - individual phrases or entire stories woven from fantasies, from which it is difficult to understand what kind of person is standing in front of you. Disorders manifested in oneiroid are characteristic of schizophrenia, and in eccentric - of an affective nature.