What should you know about left flank pain and bloating?

Bloating can occur when gas or changes in bowel movement create pressure in the abdomen, sometimes with cramps that shift after passing stool or gas. Pain linked to twisting, lifting, or a tender muscle may be separate from the bloating. Kidney stones can cause flank pain and nausea, while kidney infection presents with flank pain and fever or urinary symptoms. A urinary tract infection may cause burning, urgency, or frequent urination. Bloating does not by itself show which organ is responsible.

Keep a brief record of meals, bowel movements, gas, urine changes, pain waves, and movement triggers. Eat slowly, choose comfortable portions, and gentle walking may help if gas seems to be contributing. Avoid strenuous lifting while the pain is active. Drink normally unless you have specific fluid advice. A clinician can examine your abdomen and back and may check urine when pain is near the kidney area or urinary symptoms are present.

Seek urgent help for severe or rapidly worsening pain, a rigid or very tender abdomen, repeated vomiting, faintness, confusion, fever with flank pain, blood in urine or stool, or inability to pass urine, stool, or gas. Arrange a prompt review when bloating is persistent, recurrent with pain, or accompanied by unexplained weight change, ongoing bowel changes, or reduced appetite.

Ask whether the symptoms suggest a bowel, muscle, or urinary source and whether an examination or urine test is needed. Describe the timing of bloating, bowel pattern, meals, nausea, fever, urine changes, recent activity, and medicines or supplements.