All of the following are symptoms of conduct disorder except.

A. Lacks empathy. Individuals with narcissistic personality disorder (NPD) show a profound lack of empathy, often disregarding the feelings and needs of others. They may appear emotionally detached and struggle to recognize or validate other people’s experiences, leading to superficial and exploitative relationships.

B. Takes advantage of others. A key characteristic of NPD is a pattern of exploiting others for personal gain, whether in professional, social, or personal relationships. Individuals with NPD often manipulate people to maintain their sense of superiority and entitlement, showing little remorse for their actions.

C. Needs constant admiration. People with NPD have an excessive need for admiration and validation to support their inflated self-image. They may seek praise, attention, and recognition, becoming defensive or hostile when they feel unappreciated or criticized.

D. Mood swings. While mood instability can occur in response to narcissistic injury (perceived criticism or rejection), frequent and extreme mood swings are more characteristic of borderline personality disorder (BPD) or mood disorders like bipolar disorder. NPD primarily involves grandiosity, entitlement, and emotional detachment, rather than rapid emotional shifts.

A. Worry about health despite no symptoms. This describes illness anxiety disorder (formerly hypochondriasis), where individuals have an excessive fear of having a serious illness despite minimal or no physical symptoms. Unlike factitious disorder, these individuals are not fabricating symptoms but are genuinely convinced they are sick.

B. Normal voluntary and sensory dysfunction. This does not describe any recognized psychiatric disorder. However, conversion disorder (functional neurological symptom disorder) involves involuntary neurological symptoms (e.g., paralysis, blindness) without a medical cause, whereas factitious disorder involves intentional symptom fabrication.

C. Worry is out of proportion to the symptoms. This is characteristic of somatic symptom disorder (SSD), where individuals have excessive concern and distress over real but often minor physical symptoms. Unlike factitious disorder, their symptoms are not deliberately produced or exaggerated for attention.

D. Deliberate exaggeration and fabricated symptoms. Factitious disorder (formerly Munchausen syndrome) involves intentionally faking, exaggerating, or inducing medical symptoms to assume the "sick role". Unlike malingering (which is done for external rewards like financial gain), factitious disorder is driven by an internal psychological need for medical attention.