ADHD

A 9-year-old girl presenting with symptoms of inattention and poor academic performance is being evaluated for ADHD. The clinician has already obtained a detailed developmental history and conducted a clinical interview. Which of the following investigations is most appropriate as the next step to objectively assess the severity of inattention and hyperactivity symptoms?

A 7-year-old boy is brought to the child psychiatry clinic by his mother with complaints of inattention and hyperactivity for the past 18 months. The teacher reports that he frequently interrupts classroom activities, cannot sit still during lessons, and loses his pencils and homework regularly. At home, he fidgets constantly, talks excessively, and has difficulty waiting his turn during family meals. On mental status examination, he is restless, makes poor eye contact, and frequently changes topics mid-conversation. His intelligence quotient is normal. There is no history of seizures, head trauma, or significant medical illness. His father had similar difficulties during childhood. What is the most appropriate first-line pharmacological intervention for this child?

An 8-year-old girl is referred to the psychiatry clinic by her school for evaluation of persistent inattention and poor academic performance. She is described as a "daydreamer" who frequently loses focus during lessons and forgets instructions. At home, she is quiet and compliant but struggles to complete homework without constant reminders. Her mother denies any hyperactivity or impulsivity. Developmental history is unremarkable. On assessment, she demonstrates intact attention during one-on-one conversation but shows poor sustained attention on continuous performance testing. Which subtype of ADHD is most likely, and what is a key consideration before initiating pharmacotherapy?

An 8-year-old girl presents to the clinic with a 2-year history of inattention, poor academic performance, and difficulty following instructions at home and school. Her parents report that she is often forgetful and loses things frequently. Before confirming ADHD, which investigation is most appropriate to exclude a common secondary cause?

A 6-year-old girl is evaluated for persistent symptoms of inattention and hyperactivity that began at age 4 years. Her parents report that she has difficulty focusing on tasks, loses items frequently, and is constantly restless. Comprehensive developmental and neuropsychological testing is planned. Which is the most common comorbid psychiatric disorder in children with ADHD?