A delusions in psychiatry and psychology are called...
mistaken beliefs that are held with strong conviction
3110
visual hallucinations
999
convulsions caused by emotional reactions
138
A delusion is a mistaken belief that is held with strong conviction even in the presence of superior evidence to the contrary. As a pathology, it is distinct from a belief based on false or incomplete information, confabulation, dogma, illusion, or some other misleading effects of perception.