Perioral dermatitis is a facial skin disease with insuffciently studied ethiology and pathogenetic mechanisms, being one of actual problems of dermatology. It is a chronic relapsing facial skin disease mainly in women of young and middle age (in men and children meets less often). The disease has an independent clinical picture which is different from rosacea, demodecosis, seborrheic dermatitis, etc. The standard diagnostic criterion is a visual estimation of expression of an infammation on the basis of signs of exudative reaction which has a subjective character. Possibilities of a radiometric method for an objective estimation of a facial skin functional condition and indicators of an intracellular metabolism in patients with a perioral dermatitis were frst studied.

The possibility of a non-invasive estimation of a condition of a vascular and extravasated component of microcir-culation in tissues in patients with perioral dermatitis has been discussed in the research. The formation of disorders of a vascular component in microcirculation in patients with perioral dermatitis has been displayed with the help of an active resonant radiometry. It records a superweak electromagnetic radio emission of biotissues refecting a condition of vascular permeability and of a transcapillary exchange of water activity.