What should you know about left rear flank pain?

Pain beside the spine and below the ribs may worsen when you twist, bend, cough, or press the area if muscles or joints are involved. Deeper, steady pain with fever, chills, nausea, burning urination, or frequent urination can occur when the urinary system is irritated. Kidney stones can cause severe pain that comes in waves and may move towards the groin. A kidney infection commonly presents with flank pain alongside fever or urinary symptoms; this does not mean flank pain identifies the condition by itself.

Notice whether movement changes the pain, and record its onset, severity, spread, urine changes, temperature, bowel symptoms, and any recent lifting or injury. Rest from strenuous activity, keep gently mobile, and use a warm pack for a suspected muscle strain. Drink normally unless a clinician has told you to restrict fluids. A pharmacist or clinician can help you choose a pain reliever that fits your health conditions and medicines.

Seek urgent medical care for severe or rapidly worsening pain, fever with flank pain, repeated vomiting, faintness, confusion, blood in the urine, inability to urinate, or pain after a significant injury. Arrange a clinical assessment if pain persists, recurs, or comes with urinary changes, because an examination and urine testing may be needed.

Could the location and movement pattern suggest a muscle source? Do I need a urine test or imaging? Which pain medicines are suitable with my current conditions and medicines? What changes should prompt urgent review?