A nurse is caring for a client who has sleep dysregulation, poor memory, and poor concentration. When collecting data, which of the following neurotransmitters should the nurse identify as being responsible for the client's manifestations?

A. Borderline personality disorder. Borderline personality disorder falls under Cluster B, which includes dramatic, emotional, and erratic disorders. Individuals with this disorder often exhibit impulsivity, intense emotional instability, fear of abandonment, and unstable relationships.
B. Antisocial personality disorder. Antisocial personality disorder is part of Cluster B and is characterized by a disregard for social norms, lack of empathy, and manipulative or deceitful behavior. Individuals with this disorder often engage in impulsive and irresponsible actions.
C. Dependent personality disorder. Dependent personality disorder belongs to Cluster C, which includes anxious and fearful disorders. Individuals with this disorder exhibit excessive reliance on others, difficulty making decisions, and an intense fear of abandonment, leading to submissive and clingy behavior.
D. Paranoid personality disorder. Paranoid personality disorder is categorized under Cluster A, which consists of odd and eccentric personality disorders. It is characterized by pervasive distrust, suspicion of others, and a tendency to interpret others' actions as malicious.

A. Histrionic personality disorder: Individuals with this disorder exhibit excessive emotionality and attention-seeking behavior but are not typically aggressive or violent. Their actions are more dramatic and flirtatious rather than physically confrontational.
B. Borderline personality disorder: This condition is marked by unstable relationships, intense emotions, and impulsivity, but aggression in public settings is not a primary characteristic. Self-harm or intense emotional reactions are more common.
C. Antisocial personality disorder: This disorder involves a disregard for societal rules, impulsivity, and aggressive behavior. Clients often engage in criminal activities, violate others' rights, and show little remorse for their actions, making them more likely to have altercations requiring law enforcement intervention.
D. Narcissistic personality disorder: Individuals with this disorder display an exaggerated sense of self-importance and a need for admiration but are not typically physically aggressive. They may become verbally demeaning when their ego is challenged but do not frequently engage in law-breaking behavior.