What can kidney pain be a symptom of?

Blockage / infection. Blockage from kidney stone or other form of obstruction can be very painful & increases with fluid load to kiden. Pyelonephritis, kidney infection, can also be painful & tender. Kidney trauma or rupure. Hemorrage into malignant or benign kidney tumor. Large kidney cyst. Occasionally glomerulonephritis, an autoimmune inflammatory condition of kidney.