There is no definitive answer to the question of how old ADHD can be relieved. Some children with ADHD will gradually resolve the condition in adolescence or adulthood, but others will have it for a long time. ADHD is characterized by persistent inattention, impulsivity and hyperactivity, and is often accompanied by learning difficulties. As children grow older and their nervous system matures, the symptoms of ADHD gradually diminish or even disappear in adolescence or adulthood. However, there are some children with more severe ADHD, will continue into adulthood, there will still be unstable, irritable and other symptoms, and even affect the daily work and life, so purely on the basis of the age of the increase can not alleviate ADHD. ADHD try to go to the hospital in time, diagnosis and evaluation by professional doctors, and take targeted treatment.