The most common signs of ADHD are inattention, hyperactivity, and impulsivity (Mayo Clinic). These symptoms can not be made worse or become more intense, only calmed with the help of medication. According to the Mayo Clinic, symptoms start before the age of 12 and in some cases can be diagnosed at the age of 3. ADHD is more prevalent in boys who show more severe cases of ADHD. The signs vary between displays of impulsivity, inattention, and hyperactivity. People who display these behaviors can have more subtle signs that are harder to notice such as failed relationships, trouble at work, or poor academic grades. More obvious signs would include fidgeting, interrupting others, and are easily distracted. Some of these signs can go unnoticed because
