Acute Pyelonephritis

Acute Pyelonephritis is a sudden and severe infection of the kidneys, which are vital organs responsible for filtering blood and producing urine. This condition mainly affects the urinary tract, causing symptoms like fever, pain in the back or side, and frequent, painful urination. It occurs when bacteria travel up from the bladder to the kidneys, leading to inflammation and damage. The infection can make a person feel very ill and may cause complications if not treated promptly. Understanding this condition helps in recognizing the importance of kidney health and the need for medical evaluation when symptoms arise.

Acute Pyelonephritis is an infection characterized by inflammation of the renal parenchyma and renal pelvis, typically caused by an ascending bacterial infection, most commonly Escherichia coli. It involves the upper urinary tract and is distinguished from lower urinary tract infections by the presence of systemic symptoms such as fever, flank pain, and costovertebral angle tenderness. The pathophysiology includes bacterial invasion leading to an acute inflammatory response with neutrophilic infiltration and possible renal tubular damage. It is clinically significant due to its potential to cause renal scarring, sepsis, and chronic kidney disease if untreated. Diagnosis and management focus on identifying the causative organism and preventing complications.