Circadian Rhythm Abnormality in ADHD

ADHD can influence or exacerbate symptoms and is associated with circadian rhythm abnormality, leading to a delayed onset of feeling tired at night and feeling energized at around 10 p.m. instead of feeling sleepy. This can result in individuals with ADHD having their ideal sleep hours later in the night, such as between 2 a.m. and 9 a.m., which may not align with the typical sleep schedule of most people.