CAN kidney stone cause stomach ache?

Yes, kidney stones can cause stomach aches.

Kidney stones are hard deposits of minerals and salts that form in the kidneys. When they move through the urinary tract, they can cause severe pain in the back, side, and abdomen. This pain can also radiate to the groin and thigh.

Stomach pain from kidney stones is often described as a sharp, stabbing pain. It may come and go in waves, and it may be accompanied by nausea, vomiting, and fever.