Sleep-Related Disorders Home A-Z Health Information A-Z Health Library Sleep-Related Disorders Overview Sleep is a vital physiological function crucial for growth, rejuvenation, restoration and overall well-being. Disturbance in sleep can disturb the body’s homeostasis (its natural balance and equilibrium). Sleep-related disorders can either be symptoms of medical and psychiatric conditions or increase the risk of developing such disorders. Types Common sleep related disorders are as follows: Insomnia: Difficulty falling asleep or staying asleep Hypersomnolence: Excessive sleep or persistent feeling of sleepiness.Parasomnia: Unusual or unwanted behaviours and perceptions occurring during sleep Narcolepsy: Episodes of excessive daytime sleepiness and brief involuntary sleep episodes Obstructive sleep apnoea (OSA): Repeated temporary interruptions in breathing during sleep, often associated with snoring. Symptoms Symptoms depend on the type, but commonly include:Unable to fall asleepTrouble continuing sleep throughout the nightSnoring or gasping during sleepUnable to move on waking up (sleep paralysis)Mood irritabilitySleepiness/fatigue during daytime Causes The causes of sleep deprivation include:Mental health conditions: Depression, stress, or anxietyGenetics: Family history of sleep disorders.Lifestyle factors: Working late nights, irregular schedules, or excessive screen time.Substance use: Alcohol, caffeine, or recreational drugs.Side effects of certain medications Diagnostics To diagnose sleep-related disorders, doctors may recommend:Physical examination: To check for underlying conditions.Sleep study (polysomnography): Monitors breathing, brain activity, and movement during sleep.Blood tests: To check for hormonal or metabolic causes.Imaging tests: To look at brain or airway structure if needed. Treatment Management depends on the type of disorder and may include:Sleep hygiene: Establishing a consistent sleep routine, limiting screen time, and avoiding stimulants before bed.Medications (sleeping pills): Such as short-term sleeping aids (under medical supervision).Light therapy: Exposure to specific light patterns to reset the body’s sleep cycle.Cognitive behavioural therapy: A form of talk therapy that helps change unhelpful thoughts and habits related to sleep. When to see a doctor? Patients are advised to consult their doctor if they:Struggle to sleep well for more than a few weeks.Feel excessively tired or sleepy during the day.Experience loud snoring, choking, or pauses in breathing at night.Have unusual behaviours during sleep (such as sleepwalking). Prevention You can reduce the risk of sleep problems by:Maintaining a regular sleep schedule.Avoiding caffeine, alcohol, and heavy meals close to bedtime.Creating a quiet, dark, and comfortable sleep environment.Limiting screen use before sleep. Specialist to approach For management of sleep-related disorders, patients may consult a Sleep medicine specialist/Pulmonologist (for sleep apnoea and breathing-related disorders), Neurologist (for conditions like narcolepsy or parasomnias), or Psychologist/Psychiatrist (for insomnia linked to stress, depression, or anxiety). Disclaimer: The information in this Health Library is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional with any questions about a medical condition or before starting any treatment. Use of this site and its content does not establish a doctor–patient relationship. In case of a medical emergency, call your local emergency number or visit the nearest emergency facility immediately.