Patients typically present with flank pain, costovertebral angle tenderness, fever, and other features of cystitis (e.g., dysuria, frequency).
[amboss.com]
Costovertebral angle tenderness is commonly unilateral over the affected kidney, but in some cases, bilateral costovertebral angle tenderness may be present.
[ncbi.nlm.nih.gov]
Other common signs and symptoms include fever, chills, dysuria, urinary urgency and frequency, hematuria, nausea, vomiting, anorexia, costovertebral angle tenderness, and
[journals.lww.com]