... is a chemical imbalance in the brain. It is caused by a lack of seretonin in the brain. Seretonin is the "happy" chemical in the brain, which controls negative impulses, and positive desires. When there is a lack of seretonin, the person can't concentrate or control their actions. ADD can be ... opposed to children (National Institute of Mental Health, ADHD). Teenagers with ADHD usually have more problems. Depression is a common illness in which teens with ADHD suffer from. Also, a lack of self- esteem and a feeling of worthlessness are common. Teens with ADHD are at a high risk of sub...

• Word Count: 1752
• Approx Pages: 7
• Grade Level: High School