Can a UTI cause back pain?

Written by Marissa WalshPharm.D., BCPS-AQ ID
Licensed Pharmacist
Updated Feb 4, 2026  •  Published Jan 12, 2026
Fact Checked

Yes, a UTI can cause back pain. UTIs may lead to fever and pain in the lower back or sides, which can indicate a kidney infection (pyelonephritis). This happens when bacteria spread from the lower urinary tract to the kidneys, making prompt medical evaluation and treatment important to prevent serious complications.

Learn more about the causes of back pain and whether it may be from a UTI, cystitis, or something else in our analysis: Cystitis vs. UTI: Compare causes, symptoms, treatments & more


Medical disclaimer: This content is for general informational purposes only and does not constitute medical advice. Always consult your healthcare provider before making changes to your medication regimen.

Written by Marissa WalshPharm.D., BCPS-AQ ID
Licensed Pharmacist

Marissa Walsh, Pharm.D., BCPS-AQ ID, graduated with her Doctor of Pharmacy degree from the University of Rhode Island in 2009, then went on to complete a PGY1 Pharmacy Practice Residency at Charleston Area Medical Center in Charleston, West Virginia, and a PGY2 Infectious Diseases Pharmacy Residency at Maine Medical Center in Portland, Maine. Dr. Walsh has worked as a clinical pharmacy specialist in Infectious Diseases in Portland, Maine, and Miami, Florida, prior to setting into her current role in Buffalo, New York, where she continues to work as an Infectious Diseases Pharmacist in a hematology/oncology population.

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