Delusions

Delusions are fixed, falsed belief out of keeping with a person's background and firmly held despite incontroverable evidence to the contrary. To call them delusions, one needs evidence that belief is false and patient is unshakeable.

Common delusions include:

persecucatory: belief that others are trying to cause harm
delusions of reference: interpreting publicly known events or celebrities as having direct reference/significance to the patient
erotomania: belief that another is in love with the patient
grandoise: belief of an inflated sense of self-worth or power
religious: belief of receiving powers or instructions from a higer being, or of being a higher being
somatic: belief one has a physical problem
nihilistic: belief that things do not exist; a sense that everything is unreal