Hematodermatosis

Hematodermatitis (hematogenous dermatitis) is an inflammatory reaction of the skin and underlying tissues caused by the spread of blood in diseases of the blood system (leukemia, hemorrhagic diathesis).

The main clinical forms of G. are erythema nodosum, skin vasculitis, and angioedema. Vasculitis in G. manifests itself morphologically as an inflammatory process in blood vessels, accompanied by their dilation, sweating, and deposition of hemosiderin. Characterized by damage to capillaries and small arteries (capillaritis, arteritis), periphlebitis of venules and lymphatic vessels. If G. is suspected, it is necessary to determine a general analysis of peripheral blood and a coagulogram.

Hematonecrosis of a skin flap appears when there is a violation of blood circulation in the skin, which occurs when bleeding from vessels located over a long distance in the depths of the tissue, or on a large surface. Necrosis occurs mainly in the thickness of the dermis; less commonly, the process can affect the papillary and reticular layers of the dermis or the periosteum. Manifestations of hematodyskesia often appear through