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

ML Cuadrado

Corresponding Author

ML Cuadrado

Department of Neurology, Hospital Clínico San Carlos and Universidad Complutense,

Laboratory of Aesthesiology,

Department of Neurology and

María Luz Cuadrado, Servicio de Neurología, Hospital Clínico San Carlos, Profesor Martín Lagos s/n, 28040 Madrid, Spain. Tel. + 34-9 1330 3511, fax
+ 34-9 1330 3512, e-mail [email protected], [email protected]Search for more papers by this author
B Valle

B Valle

Laboratory of Aesthesiology,

Department of Physical Therapy, Hospital Universitario Fundación Alcorcón and Universidad Rey Juan Carlos, Alcorcón and

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C Fernández-de-las-Peñas

C Fernández-de-las-Peñas

Laboratory of Aesthesiology,

Department of Physical Therapy, Hospital Universitario Fundación Alcorcón and Universidad Rey Juan Carlos, Alcorcón and

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P Madeleine

P Madeleine

Centre for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark

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FJ Barriga

FJ Barriga

Laboratory of Aesthesiology,

Department of Neurology and

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JA Arias

JA Arias

Department of Nuclear Medicine, Hospital Ramón y Cajal, Madrid, Spain, and

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L Arendt-Nielsen

L Arendt-Nielsen

Centre for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark

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JA Pareja

JA Pareja

Laboratory of Aesthesiology,

Department of Neurology and

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First published: 01 June 2009
Citations: 9

Abstract

Nummular headache (NH) is characterized by focal pain fixed within a small round or elliptical area of the head surface. Sensory dysfunction is apparently restricted to the symptomatic area, but a thorough analysis of cranial pain sensitivity has not been performed. Pressure pain sensitivity maps were constructed for 21 patients with NH and 21 matched healthy controls. In each subject pressure pain thresholds (PPT) were measured on 21 points distributed over the scalp. In each patient PPT were also measured in the symptomatic area and at a non-symptomatic symmetrical point. In both groups an anterior to posterior gradient was found on each side, with no significant differences of PPT measurements between sides or groups. In patients with NH, only the symptomatic area showed a local decrease of PPT (significant in comparison with the non-symptomatic symmetrical point, P < 0.001). These findings further support that NH is a non-generalized disorder with a peripheral source.

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