The client’s family asks the nurse, "What is illness anxiety disorder?" What is the best response by the nurse?

Choice A reason: This describes somatic symptom disorder, not illness anxiety disorder. Choice B reason: A variety of symptoms over years is more consistent with somatic symptom disorder. Choice C reason: Persistent preoccupation with having or acquiring a serious illness is the defining feature of illness anxiety disorder. Clients may misinterpret normal sensations and remain preoccupied despite reassurance. Choice D reason: Excessive worrying may contribute, but illness anxiety disorder is not simply the eventual result of worry; it is a distinct psychiatric diagnosis.