<prompt> Husband having suspicion that his wife is having affair with another man, diagnosis is ?IllusionDelusionHallucinationDelirium  <response>: Ans. B. DelusionA delusion is false, firm unshakeable beliefthat is not accepted by other members of patients culture and society.Above is an example of delusion of infedility morbid jealousy, othello syndrome i.e-. False belief that ones lover has been unfaithful. 