Can pyelonephritis heal on its own?

Pyelonephritis generally does not resolve spontaneously and requires prompt medical treatment.

Pyelonephritis is classified into acute and chronic phases. Its main symptoms include frequent urination, urgency, fever with chills, and headache. Chronic pyelonephritis may present only with asymptomatic bacteriuria; more than half of affected patients have a history of acute pyelonephritis and may experience low-grade fever, intermittent urinary frequency, dysuria, lumbar discomfort, and renal tubular dysfunction to varying degrees. If the condition progresses, it may lead to chronic renal insufficiency. The clinical manifestations in acute-phase patients are similar to those of acute pyelonephritis—an acute infectious disease of the urinary system primarily caused by pathogens such as Escherichia coli, mycoplasma, and chlamydia. These pathogens usually reach the renal pelvis via the ureters or bloodstream, causing severe infection that is clinically difficult to cure. Antibiotic therapy under medical supervision—such as amoxicillin capsules—is required, along with symptomatic management to alleviate symptoms.

In daily life, attention should be paid to medication use to prevent recurrence. If complications such as renal papillary necrosis, sepsis, or renal failure occur, prompt medical attention is necessary.