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Pyelonephritis is the medical term for thekidney infection. This type of urinary tract infections first affects bladderor urethra and then progresses and affects the kidneys and it must be treated immediately inorder to avoid some serious damage of the kidneys or some serious infectionsthat may be even fatal.

Causes and symptoms of pyelonephritis

This type of infection occurs when bacteriapenetrate through the urethra into the urinary tract. There are cases when bacteriafrom some other infection in the body spread to the kidneys through the blood while only few cases when pyelonephritis occurred as the result of the kidneysurgery have been reported.

There are many warning signs and symptoms ofthe kidney infections, and the most frequent are pain in abdomen or painin the back, side or groin area. Furthermore, frequent urination, constant urgesto urinate and pain while urinating are also some of the signs of this disease.Hematuria may also appear, and it is the medical term for the condition when pus orblood appears in the urine. Some persons who suffer from pyelonephritiscomplain of high fever as well. It is very important to visit the doctor ifsome of these signs appears. The doctors usually prescribe antibiotics to treatthis disease and the patient must be hospitalized.

Complications of pyelonephritis

Kidney infection can be mild or acute andsevere or chronic. The severe pyelonephritis can cause many seriouscomplications such as permanent kidney damage, septicemia, and complicationduring pregnancy. Pyelonephritis is one of the causes for the occurrenceof the permanent kidney damage that, further may lead to the chronic kidneyfailure. This is only one of the reasons why this disease must be treatedpromptly.

Furthermore, septicemia may also happen, and it is a medical term for the poisoning of the blood. The main role of thekidneys is to filter waste from the blood and after filtration to returnthe blood. In the case when the kidney is infected, bacteria can enter theblood and spread though the bloodstream.

In the case when pyelonephritis appears in awoman is pregnant, one of the consequences may be that the newborn baby hasvery low weight or that the baby is prematurely born. Other complications of pyelonephritisincludes perinephric abscess and acute papillary necrosis. In some cases renal abscessmay also occur. All these above-mentioned complication usuallyoccur in patients that suffer from diabetes mellitus, chronic renal failure renal transplant AIDS and sickle cell disease.

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