A modern view on the problem of red flat liquid of the mouth cavity

Annotation. Today, lichen planus (LP) is a chronic inflammatory disease of the skin and mucous membranes, which can lead to a number of complications, which are especially manifested in the absence of adequate treatment or in the course of severe recurrent forms of the disease. The main insidiousness of all types of this disease is the duration of the course, when periods of “fading” are replaced by periods of exacerbation. The high risk of secondary skin infection is caused not by lichen planus itself, but by the addition of pathogenic microorganisms. In addition, the erosive-ulcerative form is classified as a facultative precancerous disease. Cancer later developed in 2% of patients with LP of the oral cavity. It is known that the cause of the development of complications of lichen planus in 5% of cases were pathogenic (transient) streptococci, in 17% – pathogenic (transient) staphylococci, in 51% – conditionally pathogenic (resident) diphtheroids, micrococci, and in 27% – mixed microflora. The primary elements of the lesion in lichen planus are characteristic rashes that have specific signs. The main element of the rash in this disease is a papule. Papules have a flat surface, are small in size (1-3 mm in diameter), often polygonal in shape. They can be slightly shiny and have a purple or reddish-bluish color. A characteristic Wickham grid observed on the surface of the papules. This mesh structure is formed due to the special structure of the epidermis and becomes visible during wetting or during dermatoscopy. The main complications of lichen planus that can arise as a result of this disease can be in the form of infectious complications – pyoderma (purulent skin lesions) and viral infections (herpetic impressions). Affected areas of the skin and mucous membranes in lichen planus are often irritated by itching and scratching, which can lead to the development of bacterial infections.