Pain in the upper right abdomen most commonly comes from the gallbladder, but several other organs sit in that area, and the cause depends on how the pain feels, how long it lasts, and what makes it better or worse. The liver, part of the large intestine, the right kidney, and even the lower right lung can all generate pain that lands in this spot. Understanding the pattern of your pain is the fastest way to narrow down what’s going on.
Gallbladder Problems: The Most Common Cause
At least 10% of U.S. adults have gallstones, and about three-quarters of them are female. Most people with gallstones never know they have them. Only about 20% of those diagnosed will ever develop symptoms or need treatment. But when a stone does cause trouble, the pain centers squarely in the upper right abdomen, often just below the rib cage.
Gallstone pain, called biliary colic, builds to a peak and then slowly fades. Episodes can last anywhere from a few minutes to several hours and end when the stone shifts or the pressure eases. The classic trigger is eating, especially a rich or fatty meal. Your gallbladder contracts to release bile when food enters the small intestine, and if a stone is blocking the exit, that contraction creates intense pressure. The pain can also wake you from sleep, sometimes hours after dinner.
If the gallbladder becomes inflamed (acute cholecystitis), the pain is more constant, often accompanied by fever, nausea, and tenderness that sharpens when you press below your right ribs and breathe in. Ultrasound is the first imaging test recommended by the American College of Radiology for this type of pain, and it can quickly confirm or rule out gallstones and inflammation.
Liver Conditions
The liver itself doesn’t have pain-sensing nerves throughout its tissue. Instead, pain comes from the thin capsule that wraps around it. When the liver swells from infection, fatty buildup, or congestion, that capsule stretches, producing a dull ache or feeling of fullness under the right rib cage. This is why conditions like hepatitis, non-alcoholic fatty liver disease, and even heart failure (which backs blood up into the liver) can all cause upper right discomfort.
Liver-related pain tends to be steady rather than coming in waves. It often feels more like pressure than sharp pain. If a tumor or abscess is involved, the capsule stretches further and the pain can become more noticeable. Yellowing of the skin or eyes (jaundice) alongside this pain is a strong signal that the liver or bile ducts are involved.
Duodenal Ulcers
The duodenum, the first section of the small intestine, sits just to the right of your midline and connects directly to the stomach. Ulcers here produce a burning or gnawing pain in the upper abdomen that has a distinctive relationship with food: eating temporarily relieves the pain, but it returns two to three hours later as the stomach empties and acid contacts the raw ulcer surface. This timing pattern helps distinguish duodenal ulcers from gallbladder pain, which worsens during or shortly after meals. Nighttime pain that wakes you between midnight and 3 a.m. is another hallmark.
Kidney Stones and Infections
The right kidney sits behind the abdominal organs, tucked against the back muscles below the ribs. A stone lodged in the right ureter or an infection in the right kidney (pyelonephritis) can produce pain that wraps from the back around to the front of the upper right abdomen. Kidney stone pain typically starts suddenly at the side of the back near the waist and radiates downward toward the groin. It comes in intense waves, and you may also notice blood in your urine, nausea, or an urgent need to urinate. The key difference from gallbladder pain is that kidney pain usually starts in the back and moves forward, while gallbladder pain starts in the front.
Musculoskeletal Pain
Not all upper right abdominal pain comes from an internal organ. A strained muscle between the ribs, a bruised rib, or even a stress fracture can mimic deeper pain. The giveaway is that musculoskeletal pain changes with movement. It gets worse when you take a deep breath, twist your torso, or press on the tender spot. Organ pain generally doesn’t change when you shift position or push on the area (with the exception of gallbladder tenderness). If you can reproduce the pain by pressing a specific point on your rib cage or by twisting, a muscle or rib issue is more likely than something internal.
Less Common but Important Causes
Several other conditions can present as upper right abdominal pain. Lung problems like pneumonia or a blood clot in the lower right lung can refer pain to the upper abdomen because the diaphragm sits between the two areas and shares nerve pathways. This is worth considering if your pain came on alongside a cough, shortness of breath, or fever.
In women of childbearing age, an uncommon condition called Fitz-Hugh-Curtis syndrome can cause right upper quadrant pain. It’s a complication of pelvic inflammatory disease where inflammation spreads to the liver capsule, forming adhesions. The pain can be confusing because it seems unrelated to any pelvic symptoms, and diagnosis often requires direct visualization through laparoscopy.
Pregnancy-Related Pain
Upper right abdominal pain during the second half of pregnancy deserves immediate attention. A condition called HELLP syndrome, which involves the breakdown of red blood cells, elevated liver enzymes, and low platelet counts, affects some pregnant women and presents with right upper quadrant or upper stomach pain in 40% to 100% of cases. It often comes alongside high blood pressure, nausea, headache, and malaise. Any new, significant pain in the upper right abdomen during pregnancy should be evaluated urgently.
How Pain Patterns Help Identify the Cause
The character of your pain carries real diagnostic information. Pain that comes in waves after meals and then fades points toward the gallbladder. A steady ache with a sense of fullness suggests the liver. Burning that improves when you eat but returns hours later fits an ulcer. Sharp pain that started in the back and wrapped forward, especially with urinary symptoms, suggests a kidney stone. Pain that worsens when you breathe deeply or twist likely involves the ribs or chest wall.
Pay attention to associated symptoms too. Fever with the pain suggests infection or inflammation. Nausea and vomiting accompany many of these conditions but are especially common with gallbladder attacks and kidney stones. Changes in stool color, particularly pale or clay-colored stool, point to a bile duct obstruction. Dark urine alongside pale stool strengthens that suspicion.
When This Pain Needs Urgent Care
Certain symptoms alongside upper right abdominal pain signal a potentially dangerous situation. These include blood in your stool or vomit, a high fever, dizziness or confusion, trouble breathing, jaundice, pain that worsens with physical activity, and visible swelling in your abdomen. Severe pain that keeps escalating rather than coming and going also warrants prompt evaluation. For most people, an ultrasound will be the first test ordered, and it can identify gallstones, liver swelling, kidney stones, and fluid collections quickly and without radiation.