Sleep Apnoea and Headache in Kathmandu — The Morning Headache Connection

Morning headache is one of the most common yet under-recognised symptoms of obstructive sleep apnoea (OSA). The headache is typically bilateral, pressing or band-like, and improves within a few hours of waking — a temporal pattern that distinguishes it from most primary headache disorders. Patients often attribute morning headache to stress or poor sleep quality without recognising the underlying breathing disorder. In Kathmandu, where snoring is frequently normalised within families, OSA-related headache often goes undiagnosed for years.

The mechanism linking OSA to morning headache involves intermittent hypoxia during sleep. Repeated episodes of upper airway collapse cause oxygen desaturation followed by reoxygenation, generating oxidative stress and neuroinflammation. Sleep fragmentation — repeated brief arousals to restore airway patency — disrupts restorative sleep stages and impairs the brain's pain-modulating systems. The combination of hypoxia, sleep fragmentation and autonomic activation produces a headache that typically peaks in the early morning hours and resolves by midday.

Dr. Jitendra Prasad Yadav — consultant neurologist & headache specialist at Kathmandu Neurology Clinic & Cognitive Center provides evidence-based evaluation for migraine.

The relationship between OSA and migraine is bidirectional and clinically significant. OSA worsens migraine frequency and severity through shared mechanisms: sleep fragmentation lowers the migraine threshold, hypoxia triggers cortical spreading depression (the neurophysiological basis of migraine aura), and autonomic dysregulation amplifies migraine-associated autonomic symptoms. Patients with both migraine and untreated OSA have more refractory headache than those with either condition alone, and treating the sleep disorder often reduces migraine frequency before any headache preventive is adjusted.

When to investigate for sleep apnoea: morning headache (especially if the patient does not recall waking during the night), witnessed apneas or gasping during sleep, excessive daytime sleepiness, unrefreshing sleep despite adequate sleep duration, and hypertension that is difficult to control all warrant sleep evaluation. A home sleep study (polygraphy) or laboratory polysomnography can confirm the diagnosis and quantify severity using the apnoea-hypopnoea index (AHI).

Treatment with continuous positive airway pressure (CPAP) is the first-line intervention for moderate-to-severe OSA. CPAP splints the airway open during sleep, eliminating apnoeic episodes and restoring oxygen saturation. Headache improvement is often reported within the first two weeks of consistent CPAP use, and many patients report better sleep quality, reduced daytime sleepiness, and fewer migraine days. Lifestyle modifications — weight management, avoiding alcohol before sleep, sleeping in a lateral position — complement CPAP therapy.

At Kathmandu Neurology Clinic & Cognitive Center, Dr. Jitendra Prasad Yadav (NMC 8029) screens sleep history at every headache consultation and coordinates sleep evaluation with polysomnography referral when OSA is suspected. Bring a sleep diary and note any witnessed apneas to Durbar Marg, Opposite of Yak & Yeti Hotel.

This article is educational and does not replace individual medical advice.