A nurse is performing an admission assessment on a client who has been diagnosed with schizophrenia. Which of the following findings should the nurse identify as a negative symptom?

The correct answer is choice D: Continuous worry about the undiagnosed presence of an illness.

Choice A rationale:

Sudden unexplained loss of peripheral sensation is not typically associated with illness anxiety disorder. This symptom may be indicative of a neurological condition and would require further medical evaluation to determine the cause.

Choice B rationale:

Obsession over a fictitious defect in physical appearance is more characteristic of body dysmorphic disorder, not illness anxiety disorder. Individuals with body dysmorphic disorder are preoccupied with one or more perceived defects or flaws in their physical appearance, which are not observable or appear slight to others.

Choice C rationale:

Having prior physical health followed by the need for two surgeries within the last three months does not necessarily indicate illness anxiety disorder. This choice does not provide enough context to link it to illness anxiety disorder, as it could be related to many other health conditions.

Choice D rationale:

Continuous worry about the undiagnosed presence of an illness is a key finding in illness anxiety disorder. Individuals with this disorder are excessively concerned with and preoccupied by the belief that they have, or are in danger of developing, a serious undiagnosed illness despite medical reassurance.

Choice A rationale:

Bizarre behavior is not a negative symptom of schizophrenia but rather a positive symptom. Positive symptoms involve an excess or distortion of normal functioning and include hallucinations, delusions, and disorganized speech or behavior. Bizarre behavior falls under the category of disorganized behavior, which is a positive symptom.

Choice B rationale:

Waxy flexibility is a characteristic of negative symptoms in schizophrenia. Negative symptoms involve a reduction or loss of normal functioning and include behaviors like social withdrawal, reduced emotional expression, and decreased motivation. Waxy flexibility refers to the phenomenon where a person with schizophrenia can be molded into different positions and maintain those positions for an extended period. This rigidity is a manifestation of reduced spontaneous movement, which is a negative symptom.

Choice C rationale:

Somatic delusions are a type of positive symptom seen in schizophrenia. These delusions involve false beliefs about one's body, health, or bodily functions. They are not negative symptoms, which are characterized by deficits in normal functioning.

Choice D rationale:

Illogicality is related to disorganized thinking, which is a positive symptom of schizophrenia. Individuals experiencing disorganized thinking may have difficulty organizing their thoughts coherently and logically, leading to speech that is difficult to follow. Negative symptoms, on the other hand, involve a decrease in normal functioning and do not pertain to logical coherence.