If you have trouble sleeping, you belong to a very large club. Tens of millions of people have difficulty falling asleep, staying asleep, and waking up, according to the 2020 National Health Interview Survey. Ongoing sleep issues are especially common in people with ADHD, Understood reports. ADHD can affect your sleep patterns and the quality of your sleep. You might feel a burst of energy at bedtime or struggle to wake up in the morning.