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Pressure pain sensitivity map of multifocal nummular headache: a case report
Cristina Rodríguez1, Sonia Herrero-Velázquez, Marina Ruiz
1Neurology Department, Hospital Clínico Universitario de Valladolid, Avda. Ramón y Cajal 3, 47005, Valladolid, Spain, crispav@hotmail.com.
Background:
Nummular headache (NH) is most commonly a localized unifocal headache; however, some patients infrequently exhibit multifocal symptomatic painful head areas retaining all features of NH. We present the pressure pain sensitivity map of an adolescent with multifocal NH.
Case Presentation:
We describe a case of a 14 year-old-girl with a 3-year history of continuous pain in four rounded areas, all of them with the same size and shape. Pressure pain thresholds (PPT) were assessed on 21 points over the scalp and over the symptomatic areas. A pressure pain sensitivity map of the head was constructed. The neurological exam was unremarkable, with neither sensory symptoms nor trophic changes within the painful areas. As previously shown, symptomatic points exhibited lower PPTs compared to the surrounding areas. The map reflected 4 restricted areas of mechanical hyperalgesia confined just to the painful areas. Treatment with gabapentin achieved complete remission.
Conclusion:
This is the first pain sensitivity map of a patient with multifocal NH. Our results support peripheral mechanisms are maintained in multifocal NH.
