Pruritus Circumscriptus Sine Materia: A Sequel of Postzosteric Neuralgia - Evaluation by Quantitative Psychophysical Examination and Laser-evoked Potentials

Abstract

A case of circumscribed pruritus existing since 1 year on clinically uninvolved skin is reported, in which careful history revealed a 5-year previous episode of herpes zoster in the same dermatome. Impairment of cutaneous sensitivity was evaluated by use of a quantitative psychophysical examination and laser-evoked cortical potentials (LEP).