Hemorrhagic fever with a renal syndrome (a hemorrhagic nephrosonephritis) - the acute virus natural focal illness proceeding with an intoxication, a fever, an original renal syndrome and hemorrhagic displays.

Etiology, pathogenesis. The originator concerns to group of arboviruses. In the feverish period of illness the virus contains in a blood, causing an infectious toxic lesion of nervous system and a serious hemorrhagic capillary toxicosis. The lesion of kidneys with development of an acute renal failure is characteristic.

Signs, current. An incubation interval from 7 till 46 days (more often from 21 till 25 days). Illness begins was acutely. There is a fever (38-40 degrees), a headache, a sleeplessness, a photophobia. By 34 day of illness the condition worsens, there is an abdominal pain, a vomiting, a hemorrhagic syndrome (a hemorrhagic eruption, nasal bleedings, hemorrhages in places of injections, etc.) . The abdominal pain and a loin amplifies up to intolerable, quantity wet decreases, its relative density low (up to 1,004), can come the anuresis, accrues an azotemia; the acute renal failure can lead to a uremic coma. After depression of a body temperature to norm the condition of the patient does not improve. The toxicosis accrues (the nausea, a vomiting, a hiccup), is broken a dream, sometimes there are meningeal signs. Absence of an icterus, augmentation of a liver and a lien is characteristic. There can be a spontaneous break of kidneys. Transportation of the patient this period should be very cautious. During convalescence attributes of illness gradually decrease. After that period the polyuria (up to 45 litres day) which lasts till 2 months is typical.