Symptoms of ADHD in children look different than in adults. Even though adults with ADHD have had it since childhood, even if they have just recently been diagnosed, there are some differences. How ADHD symptoms manifest changes as people mature into adults. The main symptoms: inattention, hyperactivity and impulsiveness remain, but how they look and how they impact an adult's life is different than how symptoms look and impact the life of a child.

The following is a comparison of how...