R39.85

Clinical Causes: Kidney infections (pyelonephritis) Kidney stones (nephrolithiasis) Injury or trauma to the back or flanks Polycystic kidney disease Musculoskeletal issues affecting the thoracic region Inflammatory conditions such as nephritis Localized abscesses or infections in the kidney area

Key Symptoms: Tenderness upon pressing the area around the lower ribs at the back Pain that may radiate to the abdomen or groin Flank pain especially during movement or deep breathing Possible signs of infection like fever or chills Nausea or vomiting if associated with kidney stones or severe infection Changes in urine such as blood, cloudiness, or foul smell General discomfort or feeling unwell

Diagnosis Path: Proper diagnosis involves a detailed medical history and physical examination targeting the costovertebral angle. Additional tests may include: - Urinalysis to check for infection or blood - Blood tests to evaluate kidney function and infection markers - Imaging studies such as ultrasound or CT scans to visualize kidney structure and identify stones or other abnormalities - Sometimes, cystoscopy or other specialized procedures if necessary The healthcare provider will interpret these findings to determine the underlying cause of the tenderness.

Treatment Protocols: Treatment strategies depend on the underlying condition causing the tenderness. Common approaches include: - Antibiotics for bacterial infections like pyelonephritis - Pain management with medications such as NSAIDs - Hydration to assist in the passage of kidney stones - Surgical interventions if necessary, for instance, stone removal or drainage of abscesses - Rest and supportive care to aid recovery Lifestyle modifications, such as increased fluid intake and avoiding triggers for kidney stones, may also be recommended. It is essential to follow medical advice for individualized treatment plans to address the specific cause effectively.