3. Paranoid Delusions

Paranoia can evolve into paranoid delusions, when the person becomes so ingrained in his paranoid thoughts that nothing can convince his the suspicions are not true. Delusions of grandeur are one example. This occurs when someone believes that he is an important person (a movie star or President of the United States, for example) despite concrete evidence that he is not.

Paranoid Delusions of Grandeur RapidEye / Getty Images

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