Does ADHD affect sleep?

About 75% of people with ADHD have significant sleep problems — a much higher rate than in the general population. The most common issues:

Delayed sleep phase: the biological clock of people with ADHD is often "delayed" — sleepiness arrives late at night, and waking up early is genuinely difficult. It is not laziness — it is circadian dysregulation.

A brain that will not switch off: at night, without external stimulation, the ADHD brain often shifts into high gear — racing thoughts, planning, worries. This is the "mind that will not stop" phenomenon.

Insomnia: both falling asleep and staying asleep can be affected. Overstimulation before bed (screens, stimulating activities) is a risk factor.

The vicious cycle: sleep deprivation worsens every ADHD symptom, especially attention, working memory, and emotional regulation. And ADHD makes sleep harder. This creates a vicious cycle that often needs targeted intervention.

What helps: strict sleep hygiene (consistent schedules, cutting screens an hour before bed, a dark, cool room), low-dose melatonin (often effective), and in some cases sleep-specific medication prescribed by a psychiatrist.