Sinus Headache vs Migraine: Why Most 'Sinus Headaches' Are Actually Migraine

Across India, millions of people take nasal decongestants and see ENT surgeons for "sinus headache." But a landmark study published in the Archives of Internal Medicine found that 86% of patients who believed they had sinus headache and had not been previously diagnosed with migraine actually fulfilled the criteria for migraine. The confusion is understandable — migraine headache is often felt in the face and forehead; it can produce nasal congestion and eye watering; and it can be triggered by weather changes (a classic "sinus headache" trigger). But the treatments are completely different.

True Sinus Headache

True sinusitis headache occurs when the paranasal sinuses are inflamed and obstructed — typically during acute sinusitis following a cold. Features: facial pressure and fullness (not throbbing); fever; thick coloured nasal discharge; pain that worsens when bending forward; recent upper respiratory infection. Duration follows the infection — usually 7–14 days. There is no nausea, no photophobia, and no phonophobia. Responds to antibiotics (if bacterial) and decongestants. Chronic sinusitis headache is rare — chronic rhinosinusitis does not typically cause daily headache without acute exacerbation.

Why Migraine Mimics Sinusitis

The trigeminal nerve — which migraine activates — supplies both the face and the sinuses. Trigeminal activation during migraine causes: nasal congestion (from autonomic activation); watery eyes; facial pressure and pain — mimicking sinusitis exactly. Additionally, migraine is triggered by weather changes (falling barometric pressure), which patients attribute to "sinus problems." Crucially, migraine is accompanied by light sensitivity, sound sensitivity, and nausea — which are absent in true sinusitis.

The MIDAS Test

If you have had recurring headaches and are unsure of the diagnosis: keep a headache diary for 4 weeks, noting: duration, location, severity, associated symptoms (nausea, light/sound sensitivity), and triggers. Share this with a neurologist. A correct diagnosis transforms outcomes — migraine responds to triptans and preventive therapy, not antibiotics and sinus sprays. Sri Anand CNC, Chanda Nagar, Hyderabad. Call +91 90633 66983.