Pyelonephritis - the nonspecific infectious disease of kidneys amazing a renal parenchyma, mainly intersticial tissue, a hollow and calyxes.

 The pyelonephritis can be one and bilateral, primary (in the kidneys not changed up to it and urinary ways) and secondary (on a background of initially changed kidneys or urinary ways), obstructive (on a background of mechanical obstruction of urinary ways) and not obstructive, acute (serous or purulent), chronic or recurring (at relapse new structures - the second kidney, etc. are involved).

Signs, current. Disease begins was acutely: appear high (up to 40 degrees) temperature, a cold fit, down-pour sweat, a pain in lumbar area; on the party of the amazed kidney - a strain of a forward abdominal wall, sharp morbidity in a costal angle; the general malaise, thirst, a dysuria or a pollakiuria. A joining headache, a nausea, a vomiting specify quickly accrueing intoxication. The leukocytosis, an aneosinophilia, a pyuria with the moderate proteinuria and a hematuria are marked. Sometimes at an aggravation of symptoms of patients the leukocytosis is replaced by a leukopenia that is a bad prognostic attribute. The sign of effleurage, as a rule, happens positive. At a bilateral acute pyelonephritis often there are attributes of a renal failure.