Sleep Disorders

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Insomnia and Hypersomnia are the commonest disorders of sleep.

Insomnia means,

1. Disorder in initiating sleep

2. Disorder in maintaining sleep – Frequent awakening at night and Early morning awakening

3. Non-restorative sleep (Feeling of not having slept well even though the patient has slept well)

Common causes of Insomnia are

  1. Any painful condition
  2. Heart disease
  3. Respiratory disease
  4. Rheumatic or musculoskeletal disease
  5. Caffeine
  6. Stressful life situation
  7. Drugs like steroids, fluoxetine
  8. Alcohol withdrawal syndrome
  9. Mania
  10. Major depression

15% to 30% of general population complains of insomnia requiring treatment.

Hypersomnia means,

  1. Excessive daytime sleepiness
  2. Sleep attacks during daytime (Falling asleep unintentionally)
  3. Sleep drunkenness (Needs more time to awaken)

1% to 2 % of the general population complains of this during any given time.

Few important causes of hypersomnia are

  1. Narcolepsy
  2. Sleep Apnea
  3. Alcohol intoxication
  4. Hypothyroidism
  5. Head injury
  6. Kleine-Levin Syndrome
  7. Sleep deprivation
  8. Menstrual associated somnolence
  9. Dysthymia
  10. Atypical depression

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