psychosis

Do Delusions Usually Involve Aliens and Government Agents?

strange-hallucinationQ: After reading your answer to Michael regarding drug-induced insanity, I began to wonder why almost all descriptions of paranoid delusions seem to involve secret electronic surveillance by government agencies or aliens. Are these themes really so common among people suffering from paranoia, or are they just convenient examples used by writers on the subject? If they are ubiquitous, how would you explain so many people having the same delusion? If not, what other delusions are there? What do people in other cultures delude about? – Mulder