Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by difficulty paying attention, impulsivity, and hyperactivity. It is one of the most common childhood disorders, affecting about 11% of children worldwide. **Symptoms of ADHD** The symptoms of ADHD can vary from person to person, but some of the most common include: * Difficulty paying attention * Impulsivity * Hyperactivity * Fidgeting * Talking excessively * Interrupting others * Difficulty following instructions * Poor organization skills * Forgetfulness * Mood swings **Causes of ADHD** The exact cause of ADHD is unknown, but it is thought to be caused by a combination of genetic and environmental factors. Some of the risk factors for ADHD include: * Family history of ADHD * Premature birth * Low birth weight * Exposure to lead or other toxins * Brain injury **Treatment for ADHD** There is no cure for ADHD, but there are a number of treatments that can help to manage the symptoms. These treatments include: * Medication * Behavioral therapy * Parent training * School accommodations **Prognosis for ADHD** The prognosis for ADHD varies from person to person. With proper treatment, many people with ADHD are able to live full and productive lives. **If you think your child may have ADHD** If you think your child may have ADHD, it is important to talk to your doctor. Early diagnosis and treatment can help to improve your child's outcome.