Pressure pain sensitivity of the scalp in patients with nummular headache: a cartographic study. Cephalalgia.

Cuadrado ML, Valle B, Fernández-de-las-Peñas C, Madeleine P, Barriga FJ, Arias JA, Arendt-Nielsen L, Pareja JA. Pressure pain sensitivity of the scalp in patients with nummular headache: a cartographic study. Cephalalgia. 2010 Feb;30(2):200-6. doi: 10.1111/j.1468-2982.2009.01895.x. PubMed PMID: 19489884.