Basic mechanisms of itch and advances in clinical management
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G Coscarella, E Edwards, G Yosipovitch
Annals of Allergy, Asthma & …, 2025
Elsevier
Chronic pruritus requires comprehensive assessment and management due to its profound impact on quality of life. The etiologies of pruritus are diverse, encompassing dermatologic, neuropathic, systemic, psychogenic, and mixed causes. Pruritogens activate C and Aδ fibers through histaminergic and non-histaminergic pathways. Increasing evidence highlights the role of Th2 cytokines, particularly interleukin (IL)-4, IL-13, and IL-31, which directly stimulate sensory neurons and perpetuate the itch-scratch cycle. Itch perception arises from dynamic …

