Delusions

• delusions - are fixed (false) beliefs that are not amenable to change in light of conflicting evidence
• persecutory delusions - belief that one is going to be harmed, harassed, and so forth.
• referential delusions - belief that certain gestures, comments, environmental cues, and so forth are directed at oneself
• grandiose delusions - when an individual believes that they have exceptional abilities, wealth, or fame
• erotomanic delusions - when an individual believes falsely that another person is in love with him or her
• nihilistic delusions - involve the conviction that a major catastrophe will occur
• somatic delusions - focus on preoccupations regarding health and organ function
• bizarre delusions - odd beliefs that are implausible and not understandable by others and does not happen in ordinary life
• delusional disorder - the presence of one (or more) delusions with a "duration of 1 month or longer"

  * functioning is not markedly impaired, and behavior is not obviously bizarre or odd