A headache shows up with a cold and then refuses to leave for years. That sounds like a neurological mystery, but we walk through a different possibility: a purely mechanical problem at the base of the skull where the greater occipital nerve travels through a tight, crowded corridor of muscle, fascia, blood vessels, and occipital lymph nodes.
We connect the dots from reactive lymphadenopathy after infections (including Epstein-Barr, COVID, and other common viruses) to a surprising long-term outcome: a lymph node that stays enlarged and gradually becomes firm, fibrotic, and scarred. In that hardened state, it can press on or grind against the greater occipital nerve every time you move your head, creating relentless sharp, throbbing pain that gets mislabeled as chronic tension headache or intractable migraine. We also unpack why standard imaging can miss it, because MRI and CT are designed to find dangerous pathology, not subtle millimeter-level compression of a tiny peripheral nerve by a benign structure.
From there, we get practical about diagnosis and next steps: symptom mapping, a hands-on exam that can sometimes find a palpable firm node, and the diagnostic greater occipital nerve block that can temporarily “turn off” the pain and prove the source is peripheral. We reference clinical documentation from headache surgery.com, the work of Dr. Adam Lowenstein at the Migraine Surgery Specialty Center, and published surgical case reports that show how removing a scarred node and freeing the nerve can meaningfully reduce symptoms for the right patient.
If you or someone you love has a headache that started after an illness and never let up, listen through and share it with them. Subscribe, leave a review, and tell us: have you ever had a “normal scan” but very real pain?
If you suffer from chronic headache after COVID or other illness, know that there is hope. Learn about nerve decompression for chronic headaches at headachesurgery.com or call Dr. Lowenstein's Clinic at 805-969-9004 for an in-person or virtual appointment.