Attention deficit hyperactivity disorder (ADHD) is a group of behavioural symptoms that include inattentiveness, hyperactivity and impulsiveness.
Common symptoms of ADHD include:
a short attention span or being easily distracted
restlessness, constant fidgeting or overactivity
being impulsive
The symptoms of ADHD usually improve with age, but many adults who are diagnosed with the condition at a young age will continue to experience problems.