case_images: PMC10757233_01
case_images: Faintly erythematous, edematous tender plaques on the right arm lasting >24 hours consistent with urticarial vasculitis.
case_images: gr1.jpg
case_images: PMC10757233_01_gr1.jpg
case_images: fig1
case_images: On physical examination, faintly erythematous, edematous plaques were observed on the bilateral arms, legs, face, scalp, and buttocks (Fig 1).
case_images: Histopathology demonstrating sparse perivascular dermatitis (A, x50, low power), neutrophilic and eosinophilic infiltrate (B, x200 interstitial), neutrophils within the blood vessel walls with leukocytoclasia, extravasated erythrocytes, and hints of fibrin deposition within the vessel walls (C, x200 perivascular).
case_images: gr2.jpg
case_images: PMC10757233_01_gr2.jpg
case_images: fig2
case_images: Histopathologic examination revealed a superficial-to-mid perivascular and interstitial infiltrate consisting of neutrophils and eosinophils, accompanied by leukocytoclasia and extravasated erythrocytes, and fibrin deposition in the vessel walls (Fig 2).