Also, the symptoms need to Be present often for ≥ 6 months Be more pronounced than expected for the child's developmental level Occur in at least 2 situations (eg, home and school) Be present before age 12 (at least some symptoms) Interfere with functioning at home, school, or work Inattention symptoms: Does not pay attention to details or makes careless mistakes in schoolwork or with other activities Has difficulty sustaining attention on tasks at school or during play Does not seem to listen when spoken to directly Does not follow through on instructions or finish tasks Has difficulty organizing tasks and activities Avoids, dislikes, or is reluctant to engage in tasks that require sustained mental effort over a long period of time Often loses things necessary for school tasks or activities Is easily distracted Is forgetful in daily activities Hyperactivity and impulsivity symptoms: Often fidgets with hands or feet or squirms Often leaves seat in classroom or elsewhere Often runs about or climbs excessively where such activity is inappropriate Has difficulty playing quietly Often on the go, acting as if driven by a motor Often talks excessively Often blurts out answers before questions are completed Often has difficulty awaiting turn Often interrupts or intrudes on others Diagnosis of the predominantly inattentive type requires ≥ 6 symptoms and signs of inattention.