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“Because the small vessels—especially the capillaries—are involved, exudation and hemorrhage are the prominent clinical features of leukocytoclastic angiitis. Purpura is almost always present in the cutaneous lesions and is frequently accompanied by evidence of increased vascular permeability. Therefore, purpura, when present, is almost always palpable.” Braverman IM. The angiitides. In: Skin Signs of Systemic Disease. […]