[Dermatosis caused by the bites of blood-sucking insects]

The present paper deals with skin lesions on the unprotected parts of the body of a 27-year-old woman which has been attacked by blood-sucking insects while staying in the Leningrad region at the end of May when the air temperature varied within 15-30 degrees C range. High biting activity of the insects resulted in the development of skin allergies. The first signs of inflammation after biting included pronounced exudative processes followed by the formation of bullous elements secreting serous fluid. Persistant time-course of epizoonosis as well as resistance to all kinds of general and local treatment resulted in the allergic contact dermatosis featuring nodular formations, especially on the skin, and solid papulous elements, accompanied by pruritus. Such persistant duration of the disease may be due, probably, to previous allergic background, resulting from her parents' allergic diseases. Identical clinical patterns of epizoonosis may be induced by the bites of various blood-suckers (sandflies, mosquitoes etc) while the human organism's response may depend upon its general state of health and immunological reactivity.