Pathology of the Cutaneous Vasculitides: A Comprehensive Review

Cutaneous leucocytoclastic vasculitis in visceral leishmaniasis

“…Small vessel vasculitis manifests usually on skin as purpura, erythema, urticaria, vesiculo-bullous lesion, superficial ulcers and splinter hemorrhages. 2 Palpable purpura, caused by extravasation of erythrocytes over the lower extremities, associated with pruritus, stinging, tenderness and burning, improves rapidly, sometimes completely, after bed rest. Areas of echymoses and hyperpigmentation are seen as the lesions resolve.…”

“…Areas of echymoses and hyperpigmentation are seen as the lesions resolve. 2,3 Although infections have long been suspected to be trigger factors for many types of vasculitis, their causal relation is only firmly established in polyarteritis nodosa and cryoglobulinaemia in Hepatitis B and C virus infection, respectively. 4 Several mechanisms may be involved in vasculitis related to infection, viz.…”

“…1 However, phaeohyphomycosis appears to be an exception, being more frequently observed in immunocompetent adults. 2 In India, it accounts for 2-8% of all central nervous system (CNS) mycoses 3,4 and it most commonly presents as an abscess or granuloma. It is caused by a group of dematiaceous (otherwise known as phaeoid or melanised) fungi that are particularly neurotropic.…”