Cephalalgia : an international journal of headache
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Review Case Reports
Nummular headache: peripheral or central? One case with reappearance of nummular headache after focal scalp was removed, and literature review.
Nummular headache, or coin-shaped cephalagia, is defined as a mild to moderate, pressure-like pain that is felt exclusively in a circumscribed area. More than 200 cases of nummular headache have been reported since it was defined in 2002, but the pathogenesis remains unclear. ⋯ Our case and evidence from the literature review support the peripheral mechanism of nummular headache. Nummular headache might be a local pain disorder stemming from terminal branches of a sensory nerve and could induce peripheral sensitization in one or several primary sensory neurons.