I’ve been interested for a long time in the relationship between ADHD and sleep, and particularly in the risk of misdiagnosis of ADHD for what may be sleep problems. In both adults and children with ADHD, sleep problems are common—often significantly more common than in the general population. What’s more, the symptoms of sleeplessness and the symptoms of ADHD, including difficulty with focus, mood swings, and hyperactivity, are often very similar…