Which condition is typically associated with right shoulder pain due to referred pain?

• A. Cholecystitis
• B. Pancreatitis
• C. Appendicitis
• D. Gastritis

Answer: (A)

Referred shoulder pain often comes from irritation of the diaphragm or its lining. The diaphragmatic nerves share pathways with the nerves that provide sensation to the shoulder, so irritation from the gallbladder area can manifest as pain in the right shoulder.

When the gallbladder is inflamed, as in cholecystitis, the inflammatory process can irritate the diaphragmatic peritoneum under the right hemidiaphragm. The brain interprets that diaphragmatic irritation as pain in the right shoulder region, so a patient may present with shoulder pain alongside upper right abdominal symptoms like right upper quadrant discomfort, nausea, or fever.

Understanding this pattern helps distinguish gallbladder problems from other conditions. Pancreatitis can radiate to the back or chest rather than the shoulder specifically; appendicitis starts around the umbilicus and moves to the lower right abdomen; gastritis tends to cause epigastric pain. The combination of right shoulder pain with signs pointing to biliary tract involvement is the classic clue pointing toward gallbladder pathology.