ADHD as a circadian rhythm disorder: evidence and implications for chronotherapy

Researchers suggest that ADHD may be a circadian rhythm disorder, which could have implications for chronotherapy. A study published in Frontiers in Psychiatry found that people with ADHD tend to have an irregular circadian rhythm, as measured by melatonin levels and sleep-wake cycles. This irregularity may be a contributing factor to the symptoms of ADHD. The researchers propose that chronotherapy, which involves adjusting the timing of daily activities to align with the body's natural circadian rhythm, may be a useful treatment for ADHD.