A 15-year-old child is aggressive and not following commands. What is the most likely diagnosis?

NORCET 10 Mains

Mental Health Nursing

Medium

Appeared in: NORCET 10 Mains

Explanation

Conduct disorder is defined by a persistent pattern of behavior that violates the rights of others and major societal norms.
The core features include aggression towards people or animals, destruction of property, deceitfulness, and serious rule violations.
The patient's presentation of being 'aggressive' and 'not following commands' directly aligns with the primary diagnostic criteria for conduct disorder.

Option B: OCD is primarily characterized by obsessions (intrusive, unwanted thoughts) and compulsions (repetitive behaviors), not aggression or defiance.
Option C: While children with ADHD can be aggressive, it is typically a result of impulsivity and poor emotional regulation, not a core, defining feature. The primary symptoms of ADHD are inattention and/or hyperactivity-impulsivity.
Option D: In Autism Spectrum Disorder, aggression is usually a reaction to sensory overload, frustration from communication difficulties, or disruption of routines. It is not a primary characteristic of the disorder itself.

Visual 1: Table: A comparative table outlining the key diagnostic criteria for Conduct Disorder, Oppositional Defiant Disorder, ADHD, and Autism Spectrum Disorder to help differentiate them.
Visual 2: Flowchart: A diagnostic flowchart starting with 'Adolescent with Aggressive Behavior' and branching out based on other associated symptoms to lead to the correct diagnosis.

Clinical Relevance

Nursing practice connection: Use the key finding related to Differential diagnosis of behavioral disorders in adolescents based on presenting symptoms to guide bedside assessment, documentation, and the next nursing action.
Nurses must be able to differentiate between these disorders to implement appropriate safety measures and therapeutic interventions. Managing a child with conduct disorder requires a focus on boundary setting and safety, which differs from the sensory-based interventions for autism.
Untreated conduct disorder has a high risk of progressing to Antisocial Personality Disorder in adulthood. Early identification and intervention are critical for long-term prognosis.
What if? If the 15-year-old was aggressive but also showed a lack of eye contact, had an intense, narrow interest in one subject, and became distressed with changes in routine, the most likely diagnosis would shift to Autism Spectrum Disorder, as the aggression would be seen as a secondary behavior.

How to Approach the Question

First, identify the key symptoms presented in the clinical vignette: 'aggressive' and 'not following commands'.
Next, consider the age of the patient (15-year-old), which is relevant for developmental norms and the onset of certain psychiatric disorders.
Systematically evaluate each option against the identified symptoms.
Ask yourself: Is aggression a primary, defining feature of this disorder, or a possible secondary symptom?
For Conduct Disorder, aggression and rule violation are core criteria. This is a strong match.
For OCD, ADHD, and Autism, aggression is not a core diagnostic feature, although it can co-occur for different reasons (impulsivity, frustration, sensory overload).

Concept Tested & Keywords

Concept Tested: Differential diagnosis of behavioral disorders in adolescents based on presenting symptoms.
Stem keywords: 15-year-old, aggressive, not following commands
Lead-in keywords: most likely diagnosis
Clinical cues: The combination of aggression and defiance in an adolescent points towards a disruptive behavior disorder.

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