Something else may cause a child's symptoms.
Other conditions -- including sleep apnea, vision problems, and hearing impairments -- could make it hard for him to focus or cause him to be disruptive. Traumatic events, such as the death of a grandparent or a divorce, also can trigger ADHD-like behaviors. If your child's pediatrician suspects ADHD, she'll probably refer you to a mental-health specialist, such as a child psychiatrist, psychologist, or behavioral neurologist. This clinician will gather information about your child's behavior from you, his teachers, and other caregivers, as well as perform a physical exam and review your child's medical history. She'll also interview and observe your child and rule out potential learning disabilities before she makes a diagnosis.