The histopathology of RNs is defined by 3 stages: acute inflammation, granulation, and necrosis. The lesions develop from small areas of granulated tissue into large nodules with necrotic centers.

A detailed report on the involvement of skin in vasculitis enriches existing disease definitions and nomenclature, and could improve the diagnosis of these manifestations. The exercise also emphasizes ...

Leukocytoclastic vasculitis is characterized by inflammation directed at small blood vessels in the skin. The process is mediated by neutrophils. Histologically, leukocytoclasis (i.e., destruction of ...

What is the differential diagnosis of a steroid-responsive illness manifested by severe headache, visual blurring, eye pain, fever, chills, night sweats, fatigue, septal panniculitis, and an elevated ...

Cutaneous vasculitis encompasses a heterogeneous group of inflammatory disorders that primarily affect the blood vessels of the skin. Manifestations vary broadly, from skin‐limited lesions to ...

When vasculitis affects the skin, it can cause red or purple spots to develop. It may also cause ulcers or blisters. A vasculitis rash can become painful or itchy. Vasculitis is an inflammation and ...