Dermatology

Clinical Presentation and Pathophysiology of Prurigo Nodularis

The mechanisms of the neuroinflammatory, chronic itch-scratch cycle and cutaneous manifestations of pruritic nodules in prurigo nodularis.

Related resources

Learning objectives

  • Review the clinical presentation of prurigo nodularis
  • Understand the neuroinflammatory mechanisms leading to the chronic itch-scratch cycle in PN
  • Explore the link between neurogenic inflammation, skin tissue changes, and scratching in PN

Description

This short infographic outlines the clinical presentation of prurigo nodularis and the pathophysiology of the disease centering around type 2 inflammation and neuroimmune crosstalk, which propagates the neuroinflammatory itch-scratch cycle and leads to structural changes in the skin. 

MAT-US-2202347 v3.0 Exp. 03/06/2026