Arachnoid cyst, primary shunting

Attention deficit hyperactivity disorder

Symptoms of ADHD include developmentally inappropriate and maladaptive degrees of inattention, hyperactivity, and impulsivity, resulting in clinically significant impairment in social, academic, or occupational functioning. Onset is typically before 12 years of age, but symptoms such as distractibility, impulsivity, and pathological disorganization may persist into adulthood. It is a neurobehavioral syndrome that is defined by its behavioral phenotype, and is the most common entity seen by child neurologists and psychiatrists.