Tracking patients with chronic occipital headache after occipital nerve decompression surgery: A case series.

Background: The therapeutic benefit of nerve decompression surgeries for chronic headache/migraine are controversial.

Aim: To provide clinical characteristics of headache type and treatment outcome of occipital nerve decompression surgery.

Methods: A retrospective review of clinical records.

Upregulation of inflammatory gene transcripts in periosteum of chronic migraineurs: Implications for extracranial origin of headache.

Objective: Chronic migraine (CM) is often associated with chronic tenderness of pericranial muscles. A distinct increase in muscle tenderness prior to onset of occipital headache that eventually progresses into a full-blown migraine attack is common. This experience raises the possibility that some CM attacks originate outside the cranium.