What clinical manifestation is Joan most likely to exhibit? (patient with eating disorder)

Choice A reason: Oppositional Defiant Disorder (ODD) is characterized by a pattern of angry or irritable mood, argumentative or defiant behavior, and vindictiveness. While ODD involves hostility, it generally does not include the level of physical aggression toward others or the serious violation of societal norms seen in Conduct Disorder.

Choice B reason: Social Phobia, or Social Anxiety Disorder, involves an intense fear of being watched and judged by others in social situations. It leads to avoidance behaviors and significant distress in social interactions, which is the opposite of the aggressive, bullying, and externalizing behaviors described in the child's clinical presentation.

Choice C reason: Conduct Disorder involves a repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate societal norms are violated. Bullying, physical aggression (hitting), and a lack of remorse are core diagnostic criteria that differentiate this disorder from less severe behavioral issues.

Choice D reason: Attention-Deficit/Hyperactivity Disorder (ADHD) is characterized by a persistent pattern of inattention, hyperactivity, and impulsivity. While impulsive behavior can lead to frustration, ADHD does not inherently include intentional bullying, physical aggression, or a lack of remorse, which are specific markers of a more severe behavioral disturbance.

Choice A reason: Tolerance is a physiological state in which repeated exposure to a substance results in a diminished response, requiring increasingly larger doses of the drug to achieve the same initial effect or desired "high." This occurs due to neuroadaptation at the cellular and receptor levels within the central nervous system.

Choice B reason: Intoxication refers to the acute state of being under the influence of a substance, resulting in maladaptive behavioral or psychological changes. While Erik is a user, the statement specifically addresses the need for increased quantity over time rather than the immediate physiological effects of a single dose of heroin.

Choice C reason: Withdrawal consists of the specific physical and psychological symptoms that occur when a person stops or reduces the intake of a substance they are dependent upon. Erik is describing the process of increasing his usage to maintain effect, rather than the symptoms of distress following the cessation of the drug.

Choice D reason: Addiction, or substance use disorder, is a broad clinical diagnosis encompassing compulsive drug seeking, loss of control, and continued use despite negative consequences. While tolerance is a common physiological component of addiction, Erik's specific description of needing more drug for the same effect is the precise definition of tolerance.