Insomnia: What It Is, Causes, Symptoms & Treatment

Medically reviewed by Dr. Amit Chopra, MD – Psychiatrist and Sleep Specialist 

If you’ve spent more nights than you can count staring at the ceiling, you’re not alone. Sleep disturbance affects millions of adults, and for many, an occasional bad night turns into chronic insomnia — a pattern of trouble sleeping that lasts for weeks or months and starts to affect mood, focus, and physical health. 

The good news: insomnia is one of the most treatable sleep conditions, and effective insomnia therapies don’t always mean a prescription. This guide covers what insomnia is, what causes it, the symptoms to watch for, and the treatment options available — from cognitive behavioral therapy for insomnia (CBT-I) to sleep medication — so you can have an informed conversation with your provider about what’s right for you. 

Insomnia by the Numbers (U.S.) 

Insomnia is far more common than most people realize: 

• About 30–40% of U.S. adults report insomnia symptoms at some point in a given year, and roughly 5–10% meet full clinical criteria for chronic insomnia disorder. 

• In 2024, 15.4% of U.S. adults reported trouble falling asleep and 18.1% reported trouble staying asleep. 

• The CDC recommends at least 7 hours of sleep a night for adults — yet roughly 1 in 3 American adults fall short of that. 

• Women are about twice as likely as men to experience insomnia. 

• For nearly 40% of people with chronic insomnia, symptoms persist for three years or more, which is why early, structured treatment matters. 

• Insomnia is also linked to a higher risk of depression, obesity, high blood pressure, and cognitive decline — another reason to treat it rather than “push through” it. 

What Is Insomnia? 

Insomnia isn’t just “a bad night’s sleep.” Clinically, it means regularly having trouble falling asleep, staying asleep, or waking up too early and not being able to get back to sleep — despite having the opportunity to sleep normally. 

Insomnia generally falls into a few patterns: 

• Sleep onset insomnia — difficulty falling asleep at the start of the night 

• Sleep maintenance insomnia — falling asleep fine but waking up repeatedly through the night 

• Early morning awakening — waking up well before your alarm and being unable to fall back asleep 

• Chronic insomnia — any of the above happening at least three nights a week for three months or longer 

Short-term sleeplessness is often tied to something identifiable — stress, travel, illness, a new medication, or a change in routine. Chronic insomnia is more complicated and usually benefits from a structured treatment approach rather than waiting it out. 

Causes of Insomnia 

Insomnia rarely has a single cause. Some of the most frequent contributors include: 

• Stress and anxiety, including work pressure, financial stress, or racing thoughts at bedtime 

• Poor sleep habits, like irregular bedtimes, screen use before bed, or napping late in the day 

• Underlying health conditions, such as anxiety disorders, depression, chronic pain, or hormonal changes (including menopause) 

• Caffeine, alcohol, or certain medications that interfere with sleep architecture 

• Untreated sleep disorders, like sleep apnea or restless legs syndrome, which can look like insomnia but need different treatment 

Because the causes vary so much from person to person, effective insomnia treatment usually starts with identifying what’s actually driving the sleeplessness — not just treating the symptom. 

Symptoms of Insomnia 

Insomnia shows up differently from person to person, but the most common symptoms include: 

• Lying awake a long time before falling asleep 

• Waking up frequently during the night 

• Waking too early and being unable to fall back asleep 

• Feeling tired, unrefreshed, or groggy after a full night in bed 

• Daytime fatigue, low energy, or sleepiness 

• Trouble concentrating, remembering things, or staying focused 

• Irritability, low mood, or increased anxiety 

• Increased errors or accidents caused by daytime drowsiness 

• Ongoing worry about sleep itself, which can make falling asleep even harder 

If several of these symptoms are showing up regularly — especially alongside daytime impairment — it’s worth talking to a provider rather than waiting for things to improve on their own. 

Insomnia Treatment Options 

Treatment for insomnia generally falls into two categories: behavioral therapy and medication. Most providers start with behavioral approaches, since they address the root cause rather than just managing symptoms. 

Cognitive Behavioral Therapy for Insomnia (CBT-I) 

Cognitive behavioral therapy for insomnia is considered the first-line treatment for chronic insomnia by sleep medicine guidelines — often recommended before medication, not after it. Unlike sleep aids, which manage symptoms night to night, CBT-I addresses the thought patterns and habits that keep insomnia going. 

A typical course of CBT-I includes: 

• Sleep restriction therapy — temporarily limiting time in bed to rebuild sleep efficiency 

• Stimulus control — retraining your brain to associate the bed with sleep, not wakefulness or worry 

• Cognitive restructuring — identifying and reframing anxious thoughts about sleep (“I’ll never fall asleep,” “I need eight hours or tomorrow is ruined”) 

• Relaxation training — techniques to lower physical and mental arousal at bedtime 

• Sleep hygiene education — adjusting habits like caffeine timing, light exposure, and bedtime routines 

CBT-I is typically delivered over 4–8 sessions with a trained provider, though some programs are available online. Research consistently shows it produces longer-lasting improvement than medication alone, with fewer side effects and no risk of dependence. 

Sleep Aids: When Medication Makes Sense 

Sleep aids — whether over-the-counter or prescription — can be useful for short-term relief, especially when insomnia is tied to a temporary stressor, or as a bridge while starting CBT-I. Options range from OTC antihistamines and melatonin to prescription medications designed specifically for sleep onset or sleep maintenance insomnia. 

Medication isn’t a long-term fix on its own for most people. It doesn’t address the underlying habits or thought patterns causing the insomnia, tolerance can build over time, and stopping the medication often brings the sleep problems back. That’s why many providers use sleep aids alongside — not instead of — behavioral treatment, particularly for chronic insomnia. 

CBT-I vs. Sleep Aids: Which Should You Try First? 

For most people with ongoing trouble sleeping, the most effective insomnia treatment combines both: short-term medication to get relief while starting CBT-I to build sleep habits that last. 

When to See a Provider About Insomnia 

Occasional sleeplessness usually resolves on its own. It’s worth scheduling an evaluation if you’re experiencing: 

• Trouble sleeping three or more nights a week for over a month 

• Daytime fatigue, irritability, or difficulty concentrating 

• Reliance on OTC sleep aids just to get through the night 

• Insomnia connected to anxiety, depression, or another underlying condition 

A sleep specialist can rule out other sleep disorders, identify what’s driving your insomnia, and build a treatment plan — whether that’s CBT-I, medication, or a combination — tailored to your situation. 

If chronic insomnia or ongoing trouble sleeping is affecting your daily life, Schedule a Sleep Consultation with Zen Minds Psychiatry to talk through your symptoms and treatment options with our team.