Chicken pox - the virus disease, described moderately expressed intoxication, good-quality current, a vesicular exanthema, a long finding of a virus in the form of a latent infection, at which activization (more often after 60 years) proceeds in the form of surrounding herpes. Disease transfer mainly at children's age. A way of transfer - airborne.

Etiology, pathogenesis. The originator of a chicken pox concerns to viruses of group of herpes, is unstable in an environment. Gets into an organism through mucosas of the top respiratory ways. After an incubation interval there is a virusemia; the virus is fixed in epithelial cells of a skin and mucosas, causing a characteristic eruption. The originator can be in an organism; as a result of various provoking factors it is activated and causes local dermal rashes - surrounding herpes.

Signs, current. The incubation interval proceeds from 10 till 23 days (more often 13-17 days). The beginning of illness acute - from a fervescence; almost simultaneously on a skin of all body there is an eruption which elements in the beginning look like fine papules, then quickly turn to vesicles; in 13 days they dry up, forming superficial crusts. Pour new elements; owing to their non-simultaneous maturing the eruption is characterized by a polymorphism. The weakened children have very rare form - a varicellous infection a lesion of internal organs which can end with mors of the patient. Occurrence of this form can be promoted by treatment by corticosteroids and cytostatic preparations. Complications are rare: abscesses, phlegmons, pneumonias, encephalitises.