Pain Under the Right Rib: Causes and Red Flags

Pain under the right rib can be anything from a muscle you tweaked reaching for a seatbelt to something that needs an emergency room tonight. The location alone will not tell you which. What the pain does, and what comes with it, tells you far more.

Is pain under the right rib an emergency?

Sometimes, yes. Go to an emergency room or call 911 for severe or rapidly worsening pain, pain with a fever or shaking chills, yellowing of the eyes or skin, vomiting you cannot stop, pain that came on after a fall, crash, or blow to the chest, or sudden sharp pain with breathlessness, coughing blood, or a racing heart.

Chest pressure or tightness spreading to the arm, neck, or jaw is also a 911 call, even though it feels lower down than you expect a heart problem to be. Heart symptoms do not always land where diagrams put them.

Most right-sided rib pain is not any of that. A dull ache after a big meal, a sharp catch when you twist, or crampy discomfort that eases after a bowel movement are all common and usually mundane. Even so, nothing on this page can identify your cause. The organs in this area sit close together, their pain patterns overlap heavily, and only a clinician examining you, usually with blood tests and an ultrasound, can tell them apart.

What is under your right rib cage?

A surprising amount. The right upper abdomen holds the liver, which is the largest organ in the area, the gallbladder tucked underneath it, the bile ducts draining both, the right kidney sitting further back, and the bend in the colon known as the hepatic flexure.

The rib cage itself contributes muscles between the ribs, called intercostal muscles, the cartilage joining ribs to the breastbone, and the nerves running along the underside of each rib. The diaphragm, the sheet of muscle you breathe with, forms the ceiling, and the lower part of the right lung sits just above it.

That crowding is why pain here is hard to place. Nerves from these structures share pathways, so an inflamed gallbladder can be felt in the right shoulder blade, and a lung problem can be felt below the ribs.

What could be causing pain under the right rib?

The pattern of the pain is the most useful clue: what brings it on, how long it lasts, whether pressing on the spot reproduces it, and what else you notice. The table below covers the common possibilities and what points to each. Use it to describe your symptoms more precisely, not to reach a conclusion.

Possible cause	Features that point to it	What to do
Muscle or rib strain	Follows coughing, lifting, twisting, or a new workout; worse with a specific movement or deep breath; tender when you press the exact spot	Rest and gentle movement; see a doctor if not improving in two weeks
Costochondritis (inflamed rib cartilage)	Sharp pain near where ribs meet the breastbone, reproduced by pressing there, worse on deep breaths	Book a routine appointment to confirm; rule out cardiac causes first if you are unsure
Gallstones (biliary colic)	Steady, building pain after fatty or large meals, lasting 30 minutes to a few hours, often spreading to the right shoulder blade, with nausea	Book a prompt appointment; ultrasound is the usual test
Gallbladder inflammation or blocked bile duct	Severe constant pain lasting hours, fever, chills, vomiting, or yellowing of the eyes or skin	Emergency room now
Liver conditions	Dull ache or fullness rather than sharp pain, developing gradually, with fatigue, nausea, appetite change, or dark urine	Book an appointment; blood tests and imaging are needed
Trapped gas, constipation, or IBS	Crampy, shifting, bloated discomfort that eases after passing gas or a bowel movement; fluctuates through the day	Self-care first; see a doctor if it recurs or bowel habits have changed
Kidney stone or kidney infection	Pain felt more toward the back or flank, coming in waves, spreading to the groin, with blood in urine, burning, or fever	Urgent care for severe pain; emergency room for pain with fever
Lung causes such as pneumonia or pleurisy	Pain distinctly worse on breathing in or coughing, with cough, fever, or breathlessness	Same-day medical care
Blood clot in the lung	Sudden sharp pain with breathlessness, fast heartbeat, coughing blood, or after long immobility or surgery	Call 911 immediately
Peptic ulcer or reflux	Burning or gnawing pain related to meals or lying down, sometimes with heartburn or nausea	Book an appointment; emergency care for black stools or vomiting blood
Shingles	Burning, tingling, or intense skin sensitivity in a band on one side, sometimes days before a blistering rash appears	Contact a doctor promptly, ideally within 72 hours of the rash

Could it be your gallbladder?

Gallbladder pain is one of the most recognizable patterns here, and gallstones are common. The classic description is a steady, building ache or cramp in the right upper abdomen that starts after a fatty or unusually large meal, lasts from about half an hour to a few hours, and then fades.

Two extra features make it more likely: pain that spreads through to the right shoulder blade or the middle of the back, and nausea or vomiting with the attack. According to the National Institute of Diabetes and Digestive and Kidney Diseases, many people with gallstones never have symptoms at all and find them incidentally.

What changes the urgency is when an attack stops behaving like an attack. Pain that becomes severe and constant rather than coming and going, or arrives with fever, chills, vomiting, or yellowing of the eyes, can mean the gallbladder is inflamed or a bile duct is blocked. That is an emergency room situation, not a wait-and-see one.

Could it be your liver?

The liver itself has no pain nerves inside it, so liver problems tend to produce a dull ache, heaviness, or fullness under the right ribs rather than a sharp pain. The sensation comes from stretching of the capsule that wraps around the organ as it swells.

Conditions that can do this include hepatitis, fatty liver disease, and congestion of the liver from heart problems. They usually build gradually and come with other clues: unusual fatigue, nausea, reduced appetite, dark urine, pale stools, itching, or easy bruising.

Yellowing of the whites of the eyes, called jaundice, alongside pain is the sign that moves this from routine to urgent. The NIDDK's overview of liver disease covers the range of causes, but distinguishing between them requires blood tests, which is exactly why this cannot be worked out at home.

Could it be a pulled muscle or rib strain?

Musculoskeletal pain is the most common cause of rib pain overall and the least worrying. The giveaway is mechanical behavior: the pain is reproduced by a specific movement, position, or deep breath, and pressing on one precise spot recreates it.

It often follows something you can name, such as a heavy coughing spell, a new exercise, an awkward twist, sleeping in a strange position, or carrying something one-sided. It typically settles over one to three weeks.

Rest from the aggravating movement, gentle stretching, and heat usually help. Keep breathing deeply a few times an hour even if it stings, because splinting your breathing after a rib strain makes chest infections more likely. If your doctor or pharmacist has cleared you for a pain reliever, use it as directed, and see a doctor if the pain is not improving after two weeks or followed a real injury.

Could it be gas, constipation, or IBS?

Yes, and this catches people out because gas in the bend of the colon under the liver mimics gallbladder pain closely. That bend, the hepatic flexure, traps gas easily, and the resulting pressure produces a crampy, bloated ache in exactly the wrong place.

The distinguishing features are helpful: this kind of pain tends to move around, changes through the day, often eases after passing gas or having a bowel movement, and frequently improves with walking. Constipation and irritable bowel syndrome produce the same pattern.

Practical steps include regular meals eaten slowly, adequate fiber and fluid, and regular movement. What should prompt an appointment instead is a lasting change in bowel habit, blood in the stool, unexplained weight loss, or pain that wakes you from sleep.

Could it be your kidney or your lung?

Both, and both are commonly missed because people assume pain below the ribs must be digestive. The right kidney sits toward your back, so kidney pain is usually felt in the flank rather than the front, often comes in intense waves, and may spread down toward the groin.

Kidney stones and kidney infections both produce this. Look for accompanying urinary clues: burning, urgency, blood in the urine, or a strong odor. Fever with flank pain suggests infection and needs same-day care.

Lung causes create referred pain because the lower right lung and the diaphragm sit directly above the liver. Pneumonia and pleurisy, which is inflammation of the lining around the lung, cause pain that is clearly worse when you breathe in or cough, usually with fever, cough, or breathlessness. A blood clot in the lung causes sudden sharp pain with breathlessness and a fast heartbeat, and that combination is a 911 call.

When should you call 911, and when should you call your doctor?

Call 911 or go to an emergency room for any of these:

• Severe pain, or pain that is getting steadily worse
• Pain with fever or shaking chills
• Yellowing of the whites of the eyes or the skin
• Vomiting that will not stop, or inability to keep fluids down
• Pain after a fall, car crash, or direct blow to the ribs or abdomen
• Sudden sharp pain with breathlessness, a racing heart, or coughing blood
• Chest pressure or tightness spreading to the arm, neck, or jaw
• Vomiting blood, or black tarry stools
• A rigid, board-like abdomen, or pain so severe you cannot stand up straight
• Confusion, fainting, or cold clammy skin alongside the pain

Book an appointment within a few days for any of these:

• Pain that keeps returning after meals, especially fatty ones
• Pain lasting more than a week, or not improving after two weeks of a suspected strain
• Pain with unexplained weight loss, persistent fatigue, or loss of appetite
• A lasting change in bowel habit, or blood in the stool
• Pain with any urinary symptoms
• Pain that wakes you from sleep
• Any new rash or band of burning skin sensitivity on one side

Before the appointment, it helps to note when the pain started, what brings it on and what relieves it, how long episodes last, whether it spreads anywhere, and what you have eaten or done differently. That description often narrows the possibilities faster than any single test.