specific developmental disorder attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder https://github.com/monarch-initiative/mondo/issues/4521 MONDO:0007743 attention deficit/hyperactivity disorder attention deficit-hyperactivity disorder attention deficit hyperactivity disorder ADHD UMLS:C1263846 MEDGEN:220387 A disorder characterized by a marked pattern of inattention and/or hyperactivity-impulsivity that is inconsistent with developmental level and clearly interferes with functioning in at least two settings (e.g. at home and at school). When present, the symptoms of hyperactivity are most often present before the age of 7 years. There are three recognized presentations or subtypes from most to least common: combined type, inattentive/distractible type, hyperactive/impulsive type. NCIT:C97160 EFO:0003888