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A 43-year-old female zoologist has an occupational dermatomycosis of the face, neck and upper part of chest caused by T. mentagrophytes. It was mistakenly diagnosed and treated as "Rosacea, papulopustular subtype, ocular rosacea" for 1.5 years. Symmetrical, atypical clinical manifestations with recurrent blepharoconjunctivitis developed as a result of self-treatment using a topical steroid. The detection of cicatrizing folliculitis in the eyebrow area and an arcual peripheral edge in fresh foci on the chest helped to suspect dermatomycosis. The definitive diagnosis was made after the detection of abundant coarse septate mycelium during microscopic investigation of skin scales from foci on the face and chest with 30% KOH and an abundant growth of Trichophyton mentagrophytes during a cultural research study of skin scales, eyebrow hair and eyelashes from lesions. The use of terbinafine for 4 weeks led to the recovery of the patient.

We describe three patients with a rare form rosacea-like chronic lupus erythematosus which at the beginning is diagnosed as rosacea due to similarity clinical picture. Literature data of clinical features, epidemiology, сlassification and treatment are presented.Conflict of interest: the authors state that there is no potential conflict of interest requiring disclosure in this article.

This article is about the case of actinic reticuloid — the rare dermatosis which clinical presentation is similar to atopic dermatitis, T-cell lymphoma. Good treatment effect was obtained by long cycles (2 cycles for 3 months) of hydroxychloroquine and sun protective therapy included sunscreens SPF 50, nicotinic acid, sun-safe clothes which blocked ultraviolet radiation without any glucocorticosteroid drugs and cytostatic treatment.

An extremely rare case of sinus histiocytosis of the non-Langerhans cell histiocytoses type is described in 55-year-old patient with isolated localization of cutanious lesion on the right cheek without involvement of nodular structures. Main skin lesion was an erythematous-cyanotic node with multiple milia-like lesions on the top of it. Histologically revealed feature was a large number of plasma cells, besides phenomenon of emperipolesis was described, which was first falsely perceived by pathologists as phagocytosis. In immu-nohistochemistry assay the changes were characterized by proliferation of large polygonal histiocytes with accumulation of pentalamellar markers in its cytoplasm (protein S-100, CD68).

A review of the literature on the etiology, pathogenesis and clinical manifestations of papillomatosis confluent and reticulated Gougerot–Carteaud (PCR) is presented. The diagnostic criteria and differential diagnosis of PCR are discussed. A 36-year-old man with obesity grade 2 and typical manifestations of PCR is described. The treatment with azithromycin during 6 days appeared to be sufficient to decrease the rash which had existed for 7 years.

The authors describe a patient of 63 years with a classic Kaposi’s sarcoma relapse, having contraindi - cations for cytostatic therapy. They also present literature data concerning the etiology, pathogenesis, diagnosis and treatment of disease.

А clinical case of a rare form of pustular psoriasis, known as “acrodermatitis continua suppurativa Hallopeau” is described. The involvement of the distal phalanges of the fingers and toes in combination with localized psoriasis vulgaris is observed. Specific features of this case are the presence of two different forms of the disease and comorbidities, that limits treatment options. The article provides current data on the clinical features and management of acrodermamtitis continua suppurativa Hallopeau. An acceptable personalized treatment with systemic retinoids and topical substances containing betamethasone dipropionate and calcipotriol has been proposed.

The tertiary cutaneous syphilis has become extremely rare as a result of the effective treatment of early syphilis with penicillin and occasional antibiotic therapy for concomitant infections. We report a case of tertiary gummatous syphilis associated with asymptomatic neurosyphilis that was initially misdiagnosed as basal cell carcinoma of the skin. A 67-year-old woman presented with the 18-month history of multiple, firm, bluish-red asymptomatic nodes on the parietal scalp, chin and lateral part of the trunk that had developed without preceding trauma. One node on the trunk had small central ulceration covered with dry yellowish crust. On the left retroauricular area the brownish-purple atrophic scar was observed. Blood tests revealed reactive VDRL, ELISA and TPHA assays. Skin biopsy has showed endarteritis with endothelial swelling and caseating granulomas along with plasmocytic infiltrate in the dermis and subcutaneous tissue. Increased lymphocyte count and the positive VDRL test with cerebrospinal fluid have confirmed the diagnosis of asymptomatic syphilitic meningitis in this patient. The treatment with aqueous penicillin intravenously has lead to resolution of the skin infiltrates and progressive more than 4-fold reduction of follow-up serum VDRL titers. This case is reported as a reminder of the possibility of tertiary syphilis with misleading clinical patterns in patients infected during the epidemics of 1995-2000. We would like to emphasize the necessity to perform timely serological and pathomorphological study to prevent misdiagnosis and mistreatment.

The authors describe a clinical observation of a case with 15 years remission between the first relapse and to the second relapse of pemphigus vulgaris. The review of clinical features and treatment methods, is also present.

The authors describe a rare clinical observation of the cutaneous manifistation of Lyme Borreliosis: primary borrelial lymphocytoma and surrounding secondary erythema chronicum migrans. The review of clinical features, histology, is also present.