Since the 80s of the last century, the most effective drug for the treatment of acne is systemic isotretinoin (SI). The introduction of SI into practice makes it possible to achieve stable clinical remission or complete recovery in 80% of acne patients, regardless of the severity of the disease, however, 20% of patients may experience relapses in the next 1.52 years. Aim. To establish the factors determining the likelihood of acne recurrence after a course of therapy using the systemic isotrtinoin. Materials and methods. After examining 275 patients, 84 patients (50 women and 34 men) who had previously been treated with SI for acne took part in the study, 54 of them had relapses for at least 4 months and the comparison group consisted of 30 patients out of 221 surveyed who did not have relapses after treatment. As part of the study, a retrospective analysis of outpatient records was carried out, data on the history of life and illness, comorbid hormonal pathology in women, anthropometric characteristics were recorded, and the presence of heredity for acne was also taken into account, the severity of acne was assessed using the Investigator's Global Assessment scale; laboratory examination was performed to exclude insulin resistance. Results. The development of relapses after the first course of acne treatment using SI was registered in 19.63%, however, indications for a second course of treatment were stated in 12.00%. The analysis of the data obtained allowed us to determine the main factors that contributed to the development of relapses: severe acne severity, the presence of rashes on the trunk, body mass index more than 25, the presence of hormonal abnormalities in women, scarification, male sex, daily dose less than 0.5 mg/kg, the presence of heredity for acne in both parents, the course dose of SI120 mg/kg, insulin resistance. Conclusion. The issue of studying the factors that can cause the development of acne recurrence after the end of the course of therapy is an extremely urgent problem, due to the fact that taking them into account at the early stages of treatment of patients will increase the percentage of patients with complete clinical remission or recovery.

The article is devoted to ParryRomberg syndrome, one of the rare diseases. Here we declare contemporary views on predisposing factors, pathogenesis and character of clinical performance. We describe the methods of differential diagnostics, the criteria of diagnostics as well as contemporary treatment methods. We also describe a case history of the disease.

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A 38-year-old female patient complained of lip augmentation. With a preliminary diagnosis of RossolimoMelkerssonRosenthal syndrome (monosymptomatic form), chronic fissure of the lower lip, the patient was sent for examination in order to exclude tumor pathology and vascular malformation. According to the results of a comprehensive clinical and laboratory examination, it was found that lip enlargement is due to the formation of granulomas. Additional follow-up by a pulmonologist confirmed the presence of sarcoidosis of the lungs with involvement of the mediastinal lymph nodes. A comprehensive examination made it possible to verify the diagnosis of multisystem sarcoidosis in a patient with macrocheilitis. As a result of complex therapy using surgical methods and systemic glucocorticosteroids, a rapid dynamics of clinical symptoms was observed and remission was achieved. This clinical case demonstrates a combination of sarcoid lesions of the tissues of the mediastinal lymph nodes, lung parenchyma and lips. It was the presence of macrocheilitis that was the main reason for visiting a dermatovenereologist and was the reason for choosing the subsequent tactics of examination and treatment. As a result of complex therapy using surgical methods of treatment and systemic glucocorticosteroids, carried out entirely within the framework of the program of state guarantees of free medical care for citizens, a stable remission of the disease was achieved.