Can ADHD cause insomnia?

Yes, many people with ADHD struggle with falling asleep or staying asleep. Hyperactivity, mental overstimulation, and difficulty switching off at night can all contribute to insomnia. Children may resist bedtime, while adults often lie awake with a racing mind. Untreated ADHD can disrupt sleep-wake cycles and worsen fatigue during the day. A tailored approach to sleep hygiene, behavioural therapy, and sometimes medication adjustment can improve sleep quality.

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