Medicinal Dermatitis is an inflammatory skin change that occurs with the external, internal or parenteral use of a particular medication. Such dermatitis is most often caused by an allergic reaction to a drug. It is manifested by the appearance of areas of hyperemia, swelling, peeling; itching, burning and wetness of the affected areas of the…
Mastocytosis is a systemic disease caused by the proliferation of mast cells and their infiltration of the skin (skin form) and internal organs (systemic mastocytosis). There are five different skin manifestations: hyperpigmentation, small and large nodes, erythrodermic foci and telangiectasia. With any form of skin elements, a diagnostic sign characteristic is revealed – the Darya-Unna…
Radiation dermatitis (radiation or X—ray dermatitis) is an inflammatory change that occurs in the skin as a result of exposure to ionizing radiation. Clinical manifestations of radiation dermatitis depend on the radiation dose. In the acute period, redness, the appearance of blisters and the formation of poorly healing ulcers are possible. In the later period,…
Lichen is a group of polyethological skin diseases characterized by the appearance of rash, itchy elements. There are several varieties of the disease, differing in the type of pathogen, type of rash, localization, contagiousness (eczema – wet lichen; microsporia, phagus, trichophytia – ringworm; psoriasis – scaly lichen; pink lichen – pityriasis; shingles). The course of…
Lichenoid tuberculid is one of the dermatological forms of this infectious disease, most often occurring as a complication of tuberculosis of other types and localizations against the background of reduced immunity. Symptoms are small symmetrical nodules of pink or brown color, located on the trunk and covered with whitish scales. The diagnosis is made on…
Pityriasis lichenoides is an acute or chronic lesion of the skin of unknown etiology, which is associated with a violation of the functioning of certain clones of T–lymphocytes. Symptoms of the condition are vesicular or papular rashes. Peeling of the skin is often observed, after the rash resolves, noticeable scars may remain. Diagnosis is made…
Pemphigus foliaceus is a clinical form of pemphigus, which is characterized by the formation of flat unstrained bubbles, the reappearance of bubbles under the crusts in place of already resolved elements and pronounced delamination of the epidermis. The course of the disease is chronic, long-term, with a tendency to generalization and damage to extensive areas…
Lipoma is a common benign mesenchymal tumor consisting of mature fat cells. It is a rounded or oblong formation of a soft-elastic consistency, covered with unchanged skin. The tumor slowly increases in size without causing unpleasant sensations. When localized in the immediate vicinity of blood vessels and nerves, it can squeeze them, provoking the development…
Necrobiosis lipoidica is a chronic skin disease caused by the deposition of fats in skin areas with degenerative and necrobiotic changes. Characteristic is the appearance of nodules in the skin, the mergers of which form dense plaques with a shiny surface. Accurate diagnosis of the disease is carried out according to histological examination. An important…
Beau’s lines are a type of acquired onychodystrophy as a result of damage to the matrix of the nail plate. It is clinically manifested by transverse lines, the depth of which (up to 1 mm) is proportional to the severity of the pathology. Beau’s lines do not differ in color from a healthy nail, they…