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Review
. 2019 Jan-Mar;66(1):85-98.
doi: 10.29262/ram.v66i1.345.

[Chronic pruritus]

[Article in Spanish]
Affiliations
Review

[Chronic pruritus]

[Article in Spanish]
Ana María Villa-Arango et al. Rev Alerg Mex. 2019 Jan-Mar.

Abstract

Chronic pruritus is defined as an unpleasant sensation on the skin that causes scratching and lasts more than six weeks. This symptom may be a manifestation of a cutaneous or systemic disease and it jeopardizes the patients' quality of life, constantly altering their sleep and daily activities. The pathophysiology is complex and it includes multiple mediators and their respective receptors which, through different signaling pathways, carry information through type C nerve fibers towards the thalamus; from where it is distributed to various areas of the cerebral cortex. The understanding of these mechanisms has made it possible to identify potential therapeutic targets and the development of molecules that are increasingly more effective and safer for patients. The present review aims to give a vision of the diagnostic and therapeutic handling of patients with chronic pruritus.

El prurito crónico se define como una sensación no placentera de la piel que induce el rascado y que dura más de seis semanas. Este síntoma puede ser la manifestación de una enfermedad cutánea o sistémica y compromete la calidad de vida de los pacientes, alterando de forma consistente el sueño y las actividades diarias. La fisiopatología es compleja e incluye múltiples mediadores y sus respectivos receptores, que a través de diferentes vías de señalización llevan información por las fibras nerviosas tipo C hacia el tálamo, desde donde se distribuye a diversas zonas de la corteza cerebral. La comprensión de estos mecanismos ha permitido identificar posibles blancos terapéuticos y el desarrollo de moléculas cada vez más efectivas y seguras para los pacientes. La presente revisión pretende dar una visión acerca del manejo diagnóstico y terapéutico de los pacientes con prurito crónico.

Keywords: Chronic pruritus; Dermatosis; Itching.

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