Pain in your right side can come from over a dozen different sources, ranging from a pulled muscle to a problem with one of several organs packed into that area of your body. Where exactly you feel the pain, how it behaves, and what other symptoms come with it are the biggest clues to narrowing down the cause.
Your right side houses your liver, gallbladder, bile ducts, right kidney, parts of your small and large intestine, and your appendix. For women, the right ovary and fallopian tube sit in the lower right pelvis. A problem with any of these structures can register as “right side pain,” but the details matter.
Upper Right Pain: Gallbladder and Liver
The most common organ-related cause of upper right abdominal pain is the gallbladder. Gallstones can block the bile ducts, causing sudden, intense pain just below the right side of your ribcage. This pain often flares after eating fatty meals and can radiate to your right shoulder blade or back. It may last anywhere from 20 minutes to several hours. If the gallbladder itself becomes inflamed (cholecystitis), the pain tends to be more persistent and may come with fever and nausea.
One reliable indicator of gallbladder trouble: the pain gets sharply worse when you take a deep breath while someone presses under your right ribcage. This is so consistent that doctors have a specific name for it and use it as a standard part of the physical exam.
Liver problems can also cause a dull ache or feeling of fullness in the upper right area, though the liver itself doesn’t have many pain receptors. What you’re actually feeling is the stretching of the capsule surrounding the liver when the organ swells from inflammation, infection, or congestion.
Lower Right Pain: Appendicitis and Beyond
Appendicitis is the most common surgical cause of right lower abdominal pain, and it follows a recognizable pattern. It typically starts as a vague ache around the belly button, then migrates over several hours to the lower right abdomen. The pain steadily worsens, becomes constant, and gets sharper with movement, coughing, or sneezing. Fever, nausea, and loss of appetite usually follow.
A key spot to pay attention to is roughly one-third of the way along a line from your right hip bone to your belly button. Tenderness concentrated at this point is one of the most reliable physical signs of appendicitis, with about 83% sensitivity in clinical exams.
But appendicitis isn’t the only explanation. Other causes of lower right pain include inflammatory bowel conditions like Crohn’s disease (which frequently affects the area where the small and large intestines connect), infections of the intestinal lining, diverticulitis on the right side, and swollen lymph nodes in the tissue surrounding the intestines. These conditions tend to develop more gradually than appendicitis and may come with diarrhea, blood in the stool, or intermittent cramping over weeks.
Gas Pain vs. Appendicitis
Trapped gas can cause sharp, stabbing pains anywhere in the abdomen, including the right side. The critical difference: gas pain moves around, comes and goes, and resolves on its own within hours. Appendicitis pain gets worse over time, settles in one spot, and becomes constant. If your pain has been building steadily for 12 to 24 hours and isn’t letting up, that pattern alone is reason to get evaluated.
Kidney Stones and Flank Pain
Your right kidney sits toward the back of your body, tucked behind the other abdominal organs. When a kidney stone gets stuck in the tube connecting the kidney to the bladder, it causes pain that most people describe as the worst they’ve ever felt. This pain is sharp and severe, centered in the side and back below the ribs, and it radiates downward toward the groin and lower abdomen.
Kidney stone pain has a distinctive wave-like quality. It builds to an excruciating peak, eases slightly, then surges again. It doesn’t respond to changes in position, so you can’t find a comfortable way to sit or lie down. As the stone moves through the urinary tract, the location of the pain shifts. Burning during urination, pink or brown urine, nausea, and vomiting are common. If fever and chills develop, that signals an infection, which needs prompt treatment.
Muscle and Abdominal Wall Causes
Not all right-side pain comes from an organ. A strained muscle in the abdominal wall or along the ribs is one of the most common and overlooked causes. You can strain these muscles by lifting something heavy, twisting suddenly, or even through prolonged coughing. The hallmark of muscle pain is that it gets worse with specific movements: bending, twisting, or tensing your core. It often hurts more when you press directly on the sore spot, and it doesn’t come with internal symptoms like fever, nausea, or changes in urination or bowel habits.
An inguinal hernia is another abdominal wall issue that causes right-side pain, particularly in the groin. You may notice a dull ache, burning sensation, or heaviness when standing. The telltale sign is a visible or palpable bulge in the groin area that appears when you stand and disappears when you lie down. The hole in the abdominal wall that allows tissue to push through won’t close on its own.
Causes Specific to Women
Women have additional structures on the right side that can cause pain. An ovarian cyst on the right ovary can produce a dull ache or sudden sharp pain if the cyst ruptures or twists. Ovarian torsion, where the ovary rotates and cuts off its own blood supply, causes severe, sudden pain that typically sends people to the emergency room.
Ectopic pregnancy, where a fertilized egg implants in the right fallopian tube instead of the uterus, causes right-sided pelvic pain that may start mild and become severe. This is a medical emergency because the tube can rupture. Any woman of reproductive age with new right-sided pelvic pain and a missed period should consider this possibility. Pelvic inflammatory disease and endometriosis are slower-developing causes that produce chronic or recurring right-sided pain, often with menstrual irregularities or pain during intercourse.
How to Read Your Symptoms
The character of your pain tells you a lot. Cramping or colicky pain that comes in waves often points to something being squeezed or blocked, like a kidney stone, gallstone, or intestinal spasm. Steady, worsening pain that doesn’t let up suggests inflammation or infection, like appendicitis or cholecystitis. Dull, achy pain that changes with position or movement is more likely musculoskeletal.
Location matters too, but not as precisely as you might think. Organ pain is often poorly localized because the nerves serving internal organs aren’t as specific as those in your skin. That’s why appendicitis starts as a vague bellyache before localizing, and why gallbladder pain can be felt in the shoulder. Pay more attention to the pattern and associated symptoms than to the exact spot.
Certain combinations of symptoms require urgent evaluation: pain that is severe and escalating, pain with fever above 101°F, pain with inability to keep food or water down, pain with bloody stool or urine, right-sided pain in pregnancy, or abdominal pain after an injury. Any pain that wakes you from sleep or prevents you from standing upright is also worth same-day medical attention.