Eczema - an inflammation of superficial layers of a skin of the nervously-allergic character, arising in reply to influence of the external or internal stimuluses, differing a polymorphism of skin eruption, an itch and long relapsing current.

Pathogenesis: polyvalent (less often monovalent) a sensibilization of a skin as a result of which it inadequately reacts to various exogenous and endogenous influences. Sensibilizations promote stressful experiences, endocrinopathies, illnesses of a gastrointestinal tract, a liver, and also mycosises stop, chronic processes and allergic diseases. At children's age the eczema is pathogenetically bound to an exudative diathesis.

The eczema is observed at any age, on any site of an integument (more often on the face and the top extremities). Distinguish a true, microbial, seborrheal and professional eczema.

The true eczema proceeds was acutely, subacutely and chronically. The acute eczema is characterized by a bright hydropic erythema with plural smallest blisters at which opening punctual erosions with plentiful formation of flakes are formed. Subjectively - a burning sensation and an itch. Duration of an acute eczema 1,5-2 months.

The microbial eczema in which pathogenesis the appreciable role is played with a sensibilization to microorganisms (usually pyococcuses), differs an azygomorphous locating, more often on extremities, spherical outlines, precise borders of an exfoliating cornual layer, presence of pustules, is long to not healing wounds, trophic ulcers (a paratraumatic eczema).

The seborrheal eczema is pathogenetically bound to a seborrhea. Meets at thoracal age and after the period of development. It is localized on a pilar part of a head, behind auricles, on the face, in the field of a breast bone and between scapulas. Its original features are yellowish painting, stratification of fat flakes, not sharp infiltration, predilection of the centers to retrogress in the center with simultaneous body height on periphery.

The professional eczema similar with true, amazes the open sites of a skin (a brush, a forearm, a neck and the face) which first of all are exposed in conditions of manufacture to harmful influence of chemical stimuluses, and has not so persistent current as the sensibilization at it wears not polyvalent, but monovalent character.