Diseases of the skin and subcutaneous tissue (dermatology)

Papulosis malignant atrophy (syn: lethal skin-intestinal syndrome, disseminated skin-intestinal thromboangiitis of Kelmeyer, Degos disease) is a rare disease, the symptoms of which include skin and internal organs (mainly small intestine), caused by endotrombovasculitis, probably of autoimmune origin .

Facial granuloma (syn: facial granuloma eosinophilic) is a rare disease of unclear etiology. In the development of face granuloma, the role of trauma, immune and allergic reactions, increased sensitivity to light is assumed.

Purple pigmentary progressive chronic (syn: purpuro-pigmented dermatosis, hemosiderosis). Depending on the difference in the clinical picture or mechanism of the occurrence, purpuro-pigmentary dermatoses in the literature have a large number of forms.

Pustular disease of Andrews arises in the presence of foci of infection in the body, so in its pathogenesis, great importance is given to hypersensitivity reactions to streptococcal antigens.