F90-F98: Behavioural and emotional disorders with onset usually occurring in childhood and adolescence

F90: Hyperkinetic disorders

Hyperkinetic disorders, often referred to as attention deficit hyperactivity disorder (ADHD), are a group of conditions characterized by persistent patterns of inattention, hyperactivity, and impulsivity that are not typical for the individual's age development level. These symptoms commonly interfere with the individual's functioning and development. They typically arise in early childhood and can persist into adulthood. It's not clear what causes these disorders, but genetics, brain injury, exposure to environmental toxins like lead, or substance use during pregnancy have been suggested as possible risk factors. Symptoms include difficulty focusing, forgetfulness, excessive talking or activity, and acting without considering the potential consequences. These conditions can lead to complications such as poor performance at school or work, difficulties with relationships, and increased risk for other mental health disorders and substance abuse. It's important to note that being energetic or inattentive doesn't always mean a person has a hyperkinetic disorder; a healthcare professional diagnosis is based on specific symptoms and their impact on the individual's life.