Attention deficit hyperactivity disorder (ADHD) is a group of behavioural symptoms that include inattentiveness, hyperactivity and impulsiveness.

ADHD tends to surface at an early age, with most cases diagnosed between 6 and 12 years. Symptoms can be made worse when a child’s circumstances change, such as moving to a new house or joining a new school.

The symptoms of ADHD usually improve with age, but many adults who were diagnosed with the condition at an early age continue to experience problems.

For details on the symptoms and treatments for ADHD, see below.