ADHD اختلال کم توجهی - بیش فعالی ( توصیفی کامل)

Attention deficit hyperactivity disorder (ADHD) is a mental disorder of the neurodevelopmental type.[10][11] It is characterized by difficulty paying attention, excessive activity and acting without regards to consequences, which are otherwise not appropriate for a person's age.[1][2] There are also often problems with regulating emotions.[12][13][14] The symptoms appear before a person is twelve years old, are present for more than six months, and cause problems in at least two settings (such as school, home, or recreational activities).[3][15] In children, problems paying attention may result in poor school performance.[1] Additionally there is an association with other mental disorders and substance misuse.[16] Although it causes impairment, particularly in modern society, many people with ADHD can have sustained attention for tasks they find interesting or rewarding (known as hyperfocus)