What Is Insomnia and When Should I Get Help?

Key takeaway: Insomnia can affect falling asleep, staying asleep, or returning to sleep after waking too early. Persistent difficulties deserve attention when they affect daily life, even when you have enough time and a suitable place to sleep. (NHLBI: insomnia)

What does insomnia feel like

You might spend a long time trying to fall asleep, wake repeatedly and struggle to settle again, or wake earlier than you want and remain awake. During the day, you may feel worn out, irritable, or unable to concentrate. Some people feel sleepy; others mainly notice fatigue and frustration. The pattern can vary from night to night. (NHLBI: insomnia symptoms), (AASM: insomnia evidence review)

An occasional difficult night is not enough to establish chronic insomnia disorder. Nor is a particular number of hours, by itself, a diagnosis. A clinician considers the sleep difficulty alongside its duration, your opportunity to sleep, and its effects while you are awake. (NHLBI: assessing insomnia)

When does it become a chronic disorder

Short-term insomnia may follow stress or a change in your schedule or surroundings. It can last days or weeks. (NHLBI: insomnia)

Chronic insomnia disorder involves sleep difficulty at least three nights a week for at least three months, despite adequate opportunity and circumstances for sleep, with associated daytime consequences. These criteria distinguish an ongoing disorder from a symptom or from simply not having enough time available for sleep. They are a framework for clinical assessment, not a self-diagnosis checklist. (AASM: diagnostic background)

You do not need to wait three months to ask for help. Seek advice sooner if poor sleep is affecting your ability to function or cope. (NHS: when to seek help)

Why can it happen

Stress, changing routines, nighttime noise or light, and caffeine or alcohol can contribute. Worrying about sleep and repeatedly checking the clock may make the problem harder to manage. (NHLBI: causes and risk factors)

Pain, menopause symptoms, mood conditions, medicines, and other sleep disorders can also affect sleep. More than one factor may be involved. (NHS: insomnia causes) Insomnia can coexist with another condition and may need its own treatment; finding another diagnosis does not make the sleep difficulty unimportant. (AASM: 2026 clinical guideline)

What treatment helps

Cognitive behavioral therapy for insomnia, or CBT-I, is usually the first treatment recommended for chronic insomnia. It combines practical changes to sleep-related behavior with ways to address thoughts and worries that keep sleep difficult. Care may be available in person or remotely. (NHLBI: insomnia treatment)

CBT-I is more than a list of bedtime tips. The American Academy of Sleep Medicine recommends multicomponent CBT-I and advises against using sleep-hygiene advice alone to treat chronic insomnia. (AASM: behavioral treatment guideline)

Ask about an appropriate program rather than designing your own sleep-restriction schedule. Medication can be appropriate in selected circumstances, with benefits and risks discussed with a clinician. The latest AASM combination-treatment guidance supports starting CBT-I alone under most circumstances. (AASM: 2026 clinical guideline)

How can I prepare for an appointment

While arranging care, aim for a regular waking time and a quiet, comfortable bedroom. Go to bed when sleepy rather than trying to force an early bedtime. (NHS: practical sleep habits)

Keep a sleep diary for one to two weeks, noting sleep and wake times, naps, daytime sleepiness, and caffeine or alcohol use. Bring your medication list and describe what has changed. (NHLBI: assessment and sleep diaries)

Mention loud snoring, gasping, or observed breathing pauses. These may warrant assessment for sleep apnea; see Do I Have Sleep Apnea? for more information. (NHLBI: sleep apnea symptoms)

Do not drive when sleepy. If sleepiness develops behind the wheel, stop somewhere safe rather than trying to push through. (NHTSA: drowsy driving)

This information is for general adult education and does not replace individual medical advice.