Quick Answer
Sleep apnea causes breathing pauses during sleep — increasing stroke, hypertension and dementia risk. CPAP treatment is highly effective.
Medically reviewed by Dr. Jitendra Prasad Yadav • NMC 8029 • Kathmandu Neurology Clinic & Cognitive Center
Obstructive sleep apnea (OSA) is a sleep disorder characterized by repeated partial or complete obstruction of the upper airway during sleep, causing breathing pauses (apneas) and reduced oxygen levels. It affects ~10–30% of adults and is a major contributor to cardiovascular disease, stroke, diabetes and cognitive decline — yet it remains underdiagnosed.
Symptoms
Loud snoring, witnessed breathing pauses, gasping/choking during sleep, excessive daytime sleepiness, morning headaches, dry mouth on waking, difficulty concentrating, irritability, depression. Many patients are unaware of their symptoms — bed partner observation is crucial.
Health consequences
Hypertension (OSA causes resistant hypertension in many patients), stroke (increased risk 2–3x), atrial fibrillation, heart failure, type 2 diabetes, metabolic syndrome, cognitive impairment/dementia, depression, motor vehicle accidents (sleepiness).
Diagnosis and treatment
Polysomnography (sleep study) or home sleep apnea test confirms diagnosis and severity (AHI: apneas+hypopneas per hour — mild 5–15, moderate 15–30, severe >30). CPAP (continuous positive airway pressure) is first-line — highly effective when used consistently. Alternatives: oral appliances (mild-moderate), positional therapy, weight loss, upper airway surgery, hypoglossal nerve stimulation for selected patients.
When to seek professional evaluation
Sleep apnea screening is part of neurological evaluation — because it worsens stroke risk, cognitive function and headache frequency.
This guide is educational and does not replace individual medical advice.
Frequently asked questions
Answers reviewed by Dr. Jitendra Prasad Yadav • MBBS, MD (Internal Medicine), FICN (Neurology), FCNV, FIHM • NMC 8029
Yes — sleep deprivation and apnea frequently increase migraine/chronic headache frequency.
Sleep deprivation lowers seizure threshold in susceptible individuals.
Migraine is a neurological condition; headache is one feature. Associated symptoms and functional impact are important for diagnosis.
Aura refers to visual, sensory, or speech symptoms that precede the headache in some people. Both types are migraine; the presence of aura may influence management discussion.
More: All FAQs → · Ask Dr. Jitendra →
Related articles
Narcolepsy: Excessive Sleepiness, Cataplexy and the Diagnosis
Narcolepsy causes overwhelming daytime sleepiness, sudden sleep attacks and sometimes cataplexy (sudden muscle weakness triggered by emotion). Learn how it's diagnosed and treated.
REM Sleep Behavior Disorder: Acting Out Your Dreams
REM sleep behavior disorder causes you to act out vivid dreams — punching, kicking, shouting during sleep. It may precede neurodegenerative disease.
Restless Legs Syndrome: The Sleep Disorder That Is Not Just Discomfort — Kathmandu Guide
Restless legs syndrome causes irresistible urges to move legs at night, destroying sleep. Learn causes, diagnosis, and treatment in Kathmandu.
Medical Disclaimer
Content on this website is for general educational purposes only and does not constitute medical advice, diagnosis, or treatment. It is not a substitute for evaluation by a qualified healthcare professional. Always seek the advice of your physician or other qualified provider with any questions regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this website. In case of a medical emergency, contact emergency services immediately. No doctor–patient relationship is established by use of this site or by contacting the clinic through the site.
References & Review
Reviewed by Dr. Jitendra Prasad Yadav • Last reviewed: 2026-11-10
- International Classification of Headache Disorders, 3rd edition (ICHD-3).
- Harrison's Principles of Internal Medicine — Neurology sections.
- American Academy of Neurology guidelines for selected conditions (where applicable).
Content is educational and aligns with standard medical references; individual evaluation may vary. External links provide context and do not imply endorsement.