The right side of your abdomen contains several major organs, including the liver, gallbladder, appendix, right kidney, and portions of your intestines. Understanding what sits where helps explain why pain in different spots on your right side can point to very different causes.
Your abdomen is typically divided into upper and lower halves, with a distinct set of organs in each region. Some of these organs sit right beneath the surface, while others are tucked deep against your back muscles and spine.
Right Upper Abdomen
The dominant organ on your upper right side is the liver. It’s the largest solid organ in your body, sitting just beneath your diaphragm and protected by your lower rib cage. Most of the liver’s bulk, the right lobe, fills this area. You can’t normally feel it because the ribs cover it, but when the liver is inflamed or enlarged, you may notice a sense of fullness or aching under your right ribs.
Tucked against the underside of the liver is the gallbladder, a small pouch that stores bile (the digestive fluid your liver produces). The gallbladder sits at the junction of two liver segments, roughly behind the lower edge of your right ribs. It contracts after you eat a fatty meal to release bile into your small intestine.
Several other organs occupy this space as well:
- Duodenum and head of the pancreas: The first section of the small intestine curves into a C-shape here, wrapping around the head of the pancreas. Both sit deeper in the abdomen, closer to your spine.
- Right kidney and adrenal gland: These sit behind the other organs, pressed against your back muscles. The right kidney is positioned slightly lower than the left because the liver pushes it down. The right adrenal gland sits on top of the kidney, just below the liver and in front of the diaphragm.
- Parts of the colon: The upper portion of the ascending colon and the right half of the transverse colon pass through this quadrant. The sharp bend where they meet is called the right colic flexure.
Right Lower Abdomen
The right lower quadrant is best known as the home of the appendix, a small finger-shaped pouch attached to the cecum (the beginning of the large intestine). Surgical textbooks traditionally place the appendix at a specific landmark one-third of the way between the right hip bone and the navel, but actual anatomy varies. Studies examining appendix position found that about 59% of appendices sit in the pelvic region, lower than the classic textbook location, while only about 15% sit where most people expect them.
The cecum itself, the wide pouch where the small intestine empties into the large intestine, also occupies the lower right side. From there, the ascending colon travels upward along your right flank toward the liver.
In women, the right ovary and right fallopian tube sit in the lower right abdomen as well. This is why right-sided pelvic pain in women can sometimes be mistaken for appendicitis, or vice versa. Ovarian cysts, ectopic pregnancies, and ovarian torsion can all produce sharp pain in this area.
Why Right-Side Pain Location Matters
Because different organs cluster in the upper and lower portions, the location of your pain narrows down the likely cause considerably.
Pain in the upper right abdomen is most often related to the liver or gallbladder. Gallstones are one of the most common culprits, producing a cramping or squeezing pain under the right ribs that often flares after eating. Gallbladder inflammation causes more persistent pain in the same spot, frequently with fever and tenderness. Liver-related conditions, including fatty liver disease, viral hepatitis, and alcohol-related liver inflammation, can also cause a dull ache or pressure in this area.
Pain in the lower right abdomen raises concern for appendicitis, particularly if it starts near the navel and migrates to the lower right over several hours. The peak age for appendicitis is 15 to 19, though it can happen at any age. Global incidence data shows roughly 230 cases per 100,000 people each year. Lower right pain can also come from Crohn’s disease, which commonly affects the end of the small intestine in this area, or from kidney stones passing through the right ureter.
Deeper Structures You Can’t Feel
Not all organs on the right side sit close to the surface. The right kidney is a retroperitoneal organ, meaning it lies behind the membrane that lines your abdominal cavity. It rests against the muscles of your lower back, roughly at the level of your lowest ribs. Pain from the right kidney, whether from infection or a kidney stone, often shows up as a deep ache in your right flank or back rather than in the front of your abdomen.
The right adrenal gland perches on top of the kidney, positioned behind the body’s largest vein and in front of the diaphragm. Despite being small, it produces critical hormones that regulate stress responses, blood pressure, and metabolism. Problems with the adrenal gland rarely cause localized pain but can produce widespread symptoms like fatigue, blood pressure changes, or unexplained weight shifts.
Signs That Right-Side Pain Needs Attention
Mild, brief discomfort on the right side is often related to gas, muscle strain, or a passing digestive issue. But certain patterns deserve prompt evaluation. Pain that steadily worsens over hours, especially in the lower right, could signal appendicitis. Sharp upper right pain with nausea after meals points toward gallbladder problems. A deep flank ache with blood in the urine suggests a kidney stone.
Pain accompanied by fever, vomiting that won’t stop, a rigid or swollen abdomen, or skin that looks yellow (jaundice) warrants urgent medical evaluation. These combinations suggest the affected organ may be inflamed, infected, or obstructed, all situations where timing matters for treatment outcomes.