 Ask your doctor today about Sky Rizzi, the number one dermatologist prescribed biologic in psoriasis. And visit SkyRizzi.com or call 1-866-SKY-RIZZI to learn more. More than 6 million kids in the U.S. have ADHD, and many aren't getting the support they need. At Understood.org, we can help. Sometimes in class, the only thing your child can focus on are the thoughts racing through their head.