You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which is the best definition of a delusion? and explain in detail?
Fixed false belief A delusion is a fixed, false belief that is not in keeping with a patient's cultural background. The perceptual misrepresentation of a real sensory image is an illusion. The perceptual representation of a sound or an image that is not actually present is a hallucination. A pathological self-preoccupation is the definition of egomania. A dissociative fugue is a state in which patients travel away from their homes or work and assume new identities or occupations while forgetting impoant aspects and details of their former lives.