When the gallbladder becomes inflamed, sharp pain can be felt in the belly, the area above the stomach, the right shoulder blade, and the back.
Pains caused by gallstones are characterised as sudden, intense, and severe, says medical website Healthline.
While pain in the back area may seem unusual, it is a key sign of severe inflammation of the gallbladder.
Healthline says: “When gallstones cause a blockage of one of the ducts that move bile, they can trigger sudden and escalating pain, which is sometimes dubbed a gallstone attack.”
Pain that spreads from the centre of the abdomen to the back is a common symptom of such attacks.