Insomnia: Causes, Self-Help Strategies, and Treatment Options
Insomnia affects millions of Americans. Learn the difference between short-term and chronic insomnia, common causes, CBT-I, and when to see a doctor.
Key takeaways
- Insomnia means trouble falling asleep, staying asleep, or waking too early, along with daytime problems.
- Chronic insomnia occurs at least three nights a week for three months or more.
- Cognitive behavioral therapy for insomnia (CBT-I) is the recommended first-line treatment for chronic insomnia in adults.
- Talk with a doctor before using sleep aids, including over-the-counter products.
Almost everyone has a sleepless night now and then. But for millions of Americans, trouble sleeping becomes a nightly struggle. Insomnia is the most common sleep disorder, and it can affect your mood, energy, work performance, and long-term health.
The encouraging news: insomnia is very treatable, often without long-term medication.
What is insomnia?
Insomnia is difficulty falling asleep, staying asleep, or waking up too early and not being able to fall back asleep, despite having the opportunity to sleep. It also causes daytime problems, such as:
- Fatigue or low energy
- Trouble concentrating or remembering
- Irritability, anxiety, or low mood
- Reduced performance at work or school
- Worry about sleep itself
Types of insomnia
| Type | Description |
|---|---|
| Short-term (acute) insomnia | Lasts from a few days to a few weeks; often triggered by stress, travel, illness, or a life change |
| Chronic insomnia | Occurs at least 3 nights a week for 3 months or longer |
Common causes and triggers
- Stress and worry about work, finances, health, or relationships
- Mental health conditions such as anxiety and depression
- Irregular schedules, including shift work and jet lag
- Poor sleep habits, such as screen use in bed or long naps
- Caffeine, nicotine, and alcohol
- Medical conditions such as chronic pain, acid reflux, asthma, an overactive thyroid, or frequent nighttime urination
- Other sleep disorders, like sleep apnea or restless legs syndrome
- Certain medications, including some antidepressants, decongestants, steroids, and blood pressure drugs
- Hormonal changes, such as during menopause
How insomnia becomes chronic
Insomnia often starts with a trigger, such as a stressful event. Then, over time, habits and thoughts that develop in response, like spending extra time in bed, napping, or worrying about not sleeping, keep the problem going even after the original trigger is gone. Breaking this cycle is the focus of the most effective treatment.
Cognitive behavioral therapy for insomnia (CBT-I)
The American College of Physicians and the American Academy of Sleep Medicine recommend CBT-I as the first-line treatment for chronic insomnia in adults. CBT-I is a structured program, usually 4 to 8 sessions, that helps you change the thoughts and behaviors that interfere with sleep. It often includes:
- Stimulus control: using the bed only for sleep and intimacy, and getting up if you can't sleep
- Sleep restriction (sleep scheduling): temporarily limiting time in bed to match the time you actually sleep, then gradually increasing it as sleep improves
- Cognitive therapy: identifying and changing unhelpful beliefs about sleep
- Relaxation training: breathing exercises and muscle relaxation
- Sleep hygiene education
CBT-I is available from trained therapists, through telehealth, and through digital programs. The VA's free CBT-i Coach app can be a helpful companion.
Sleep restriction should be done with professional guidance, especially if you have a condition like bipolar disorder or seizures, or if you drive or operate machinery for work.
Self-help strategies to start tonight
- Keep a consistent wake time every day
- Get out of bed if you're awake for more than about 20 minutes
- Avoid naps, or keep them very short
- Limit caffeine after noon and avoid alcohol in the evening
- Create a relaxing pre-bed routine
- Keep a sleep diary for two weeks to spot patterns (and share it with your doctor)
Review our full list of sleep hygiene habits for more ideas.
What about sleep medications?
Prescription sleep medications can help in some situations, usually for short-term use. They can have side effects, including next-day drowsiness, and some carry risks for complex sleep behaviors or dependence.
Over-the-counter sleep aids often contain antihistamines like diphenhydramine or doxylamine. These can cause next-day grogginess, and the American Geriatrics Society advises older adults to avoid them due to risks of confusion and falls. Melatonin is sold as a dietary supplement in the U.S., which means it isn't FDA-approved for insomnia, and product strengths can vary.
Always talk with your doctor or pharmacist before using any sleep aid, especially if you take other medications.
When to see a doctor
See your health care provider if:
- Trouble sleeping lasts more than a few weeks
- It affects your daytime functioning or mood
- You snore loudly, gasp for air, or feel very sleepy during the day
- You suspect a medication or health condition is involved
If insomnia comes with persistent sadness, hopelessness, or thoughts of self-harm, call or text 988 for immediate support.
The bottom line
Insomnia is common and treatable. Start with consistent habits, and if problems persist, ask your doctor about CBT-I, the most effective long-term approach for chronic insomnia.
Sources & further reading
Last reviewed and updated: August 14, 2026
This article is for general information only. It isn't medical advice and can't replace a visit with your doctor, pharmacist, or other licensed health professional who knows your history. Read our full medical disclaimer.
