Neurodermatitis is a skin disease of a neurogenic-allergic nature (neuroallergodermatosis), which has a chronic recurrent course. Neurodermatitis is characterized by wet skin rashes, attacks of severe itching, combing, followed by the formation of crusts, pigmentation and thickening of the skin on the affected areas. Disease is diagnosed on the basis of dermatological examination, determination of…
Halo nevus is a pigmented nevus surrounded on the periphery by a patch of discolored skin similar to vitiligo. It can be singular and plural. In the diagnosis of halo nevus, the main one is its differentiation from those forms of melanoma that are accompanied by depigmentation along the periphery of the formation. Dermatoscopy, syascopy…
Nevus sebaceous is a benign tumor represented by hyperplastic sebaceous glands and deformed hair follicles, which develops as a result of a local violation of the embryonic development of tissues. It is localized on the scalp and face. Externally, it has the appearance of a hairless plaque of yellow-pink oval or irregular shape with a…
Nevus of Ota is a dark blue single spot of irregular shape or a group of merging spots that are located in the area of the eye, cheek and upper jaw. As a rule, it is one-sided. Pigmentation can capture the membranes and sclera of the eye, the mucous membranes of the nose and pharynx.…
Becker’s nevus is a pigmented skin formation that has a benign course and a low risk of degeneration into melanoma. The exact causes of the appearance of nevus have not been established, among the predisposing factors are genetic defects, intrauterine pathologies, connective tissue diseases. Pathology is manifested by polygonal pigmentation on the body, upper extremities,…
Brow ulerythema is a chronic dermatosis, which is a representative of the group of keratoses (their essential variety). The pathological process is localized on the face, characterized by the accumulation of nodular elements and horny scales in the mouths of the hair follicles, which create a grater phenomenon when stroking. The overlap of the horny masses…
Nummular eczema is an itchy chronic dermatitis, which is a type of microbial eczema. Clinically manifested by a rash of rounded bright red coin-shaped plaques with clear borders, towering over healthy skin, bounded by a marginal border of epithelial cells – remnants of opened vesicles. The process is accompanied by itching, combs appear, a secondary infection…
Mongolian spot is an area of gray—blue pigmentation of the skin present from birth, having a rounded or irregular shape. Most often, pigmentation is located in the lumbosacral region. This formation is one of the forms of congenital pigmented nevi. In the diagnosis of the Mongolian spot, its differentiation with melanoma-threatening neoplasms is important. As…
Acne fulminans is a rare form of acne, characterized by the appearance of rapidly ulcerating nodular or papular acne on the skin of the trunk. The disease is accompanied by a pronounced violation of general well-being in the form of fever, joint pain, appetite disorders, etc. Diagnosis is carried out according to typical clinical symptoms. Inflammatory…
Weeping eczema is an acute form of eczema that occurs with a pronounced exudative component. It is manifested by swelling, hyperemia of the skin, the formation of multiple vesicular rashes and erosions, merging into foci of wetness. To diagnose dermatosis, a comprehensive laboratory examination, histological examination of biopsies of the affected skin areas, consultations of…