Sleep Disturbance

Unrefreshing Sleep / Insomnia / Sleep Fragmentation

Moderate severity58% reported by patientsICD-10: G47.9

Summary

Difficulty falling asleep, staying asleep, or achieving restorative sleep — one of the most common complaints in primary care with broad medical and psychological causes.

What is it?

Sleep disturbance encompasses insomnia (difficulty initiating or maintaining sleep), hypersomnia (excessive daytime sleepiness), and unrefreshing sleep (waking unrestored despite adequate duration). Chronic insomnia disorder affects 10–15% of adults and is defined by sleep difficulty at least 3 nights per week for 3 or more months, with daytime functional impairment. Obstructive sleep apnea (OSA) is a highly prevalent but underdiagnosed cause of unrefreshing sleep and excessive daytime fatigue. Sleep disturbance is both a symptom and a perpetuating factor for depression, anxiety, chronic pain, and cardiovascular disease. Cognitive behavioral therapy for insomnia (CBT-I) is the first-line treatment for chronic insomnia — more effective and durable than pharmacotherapy. Pharmacological options include melatonin receptor agonists, orexin antagonists (suvorexant), Z-drugs (zolpidem), and low-dose doxepin.

Common causes

Primary Sleep Disorders

  • Insomnia disorder
  • Obstructive sleep apnea (OSA)
  • Restless legs syndrome
  • Circadian rhythm sleep disorder
  • Narcolepsy
  • Periodic limb movement disorder

Psychiatric

  • Depression
  • Anxiety disorders
  • PTSD
  • Bipolar disorder

Medical

  • Chronic pain
  • Nocturia (frequent nighttime urination)
  • GERD
  • Hyperthyroidism
  • Menopause (hot flashes)
  • Parkinson's disease
  • Heart failure

Behavioral / Environmental

  • Poor sleep hygiene
  • Shift work
  • Blue light exposure
  • Excessive caffeine or alcohol
  • Stress and hyperarousal

Medication-Induced

  • SSRIs (activating)
  • Beta-blockers (vivid dreams)
  • Corticosteroids
  • Stimulants
  • Decongestants (pseudoephedrine)

When to see a doctor

  • 1Loud snoring with witnessed apneas, morning headaches, or excessive daytime sleepiness — screen for OSA
  • 2Insomnia lasting more than 3 months causing significant daytime dysfunction
  • 3Sleep disturbance with suicidal thoughts — seek immediate care
  • 4Sudden excessive daytime sleepiness with cataplexy or sleep paralysis — evaluate for narcolepsy
  • 5New-onset sleep disturbance without obvious cause — screen for depression, thyroid disease, and OSA

What you can do

  • ✓Maintain a consistent sleep and wake time every day — including weekends
  • ✓Avoid screens (blue light) for 60 minutes before bed — suppresses melatonin
  • ✓Keep the bedroom cool (65–68°F), dark, and quiet — the three pillars of sleep hygiene
  • ✓Avoid caffeine after noon and alcohol within 3 hours of bedtime
  • ✓CBT-I (available as apps like Sleepio or SOMRYST) is more effective than sleeping pills for chronic insomnia

Conditions that cause this symptom

Sleep ApneaG47.33DepressionF32.9Restless Legs SyndromeG25.81

Medications that may help

Treatment depends on the underlying cause. Always consult your provider before starting any medication.

Zolpidem (Ambien)

Z-drug for short-term insomnia — approved for sleep onset and maintenance

Suvorexant (Belsomra)

Orexin receptor antagonist — promotes sleep onset and maintenance with lower dependency risk

Melatonin

Circadian rhythm regulator — useful for circadian shift, jet lag, and sleep onset delay

Frequently asked questions

This page is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified health provider with questions about your symptoms or medical conditions.

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