Pain under right breast is a symptom that often catches people off guard. It does not fit the pattern of classic stomach pain, and it is not where most people expect heart-related trouble. Yet it is a complaint seen regularly across all age groups. The right side of the chest and upper abdomen holds the liver, gallbladder, right lung, right kidney, lower ribs and the muscles and nerves that run between them. In many cases, the cause is simple—a strained muscle, trapped gas, or acid reflux. But this region also overlies organs that, when affected, should not be left uninvestigated. This article explains what causes pain under the right breast, how it is diagnosed, and what treatment looks like.

Causes of Pain Under Right Breast

• Costochondritis and Muscle Strain: Costochondritis (inflammation where the rib cartilage meets the breastbone) is one of the most frequent causes of right-sided chest wall pain. Pressing on the affected area reproduces the pain, and deep breathing makes it worse. Muscle strain follows a familiar pattern like a specific movement triggers the pain and rest relieves it. Heavy lifting, a sudden twist or a forceful cough are common triggers.
• Gallbladder Disease: This is the most important cause to consider when pain sits in the right upper abdomen beneath the breast. Gallbladder inflammation, or cholecystitis, produces more sustained pain in the same area alongside fever and nausea. An ultrasound confirms the diagnosis quickly.
• Liver Conditions: The liver fills most of the right upper abdomen and sits directly under the right rib cage. When it swells due to conditions such as hepatitis, fatty liver disease, or an abscess, its outer capsule stretches, generating a dull, pressure-like ache felt beneath the right breast. Yellowing of the skin or eyes, dark urine and pale stools alongside the pain point strongly point toward the liver.
•  Acid Reflux and Gastritis: Reflux does not always cause central burning. Some patients feel it predominantly on one side, and the right is not uncommon. Gastritis follows the same pattern. The discomfort is usually described as burning or gnawing rather than sharp.
• Right Lung and Pleural Conditions: Pleuritis, inflammation of the lung lining, produces chest pain that sharpens specifically on breathing in or coughing. Pneumonia in the right lower lobe often refers pain downward toward the right breast rather than the front of the chest. A pulmonary embolism is a less common but serious cause of sudden right-sided pain with breathlessness.
• Trapped Gas and Right Kidney Problems: The hepatic flexure (where the large intestine bends on the right side) sits under the right rib cage. Gas stuck at this point creates pressure and cramping beneath the right breast that can feel sharper than expected. The right kidney, positioned in the back but close to the front, can produce pain felt under the right breast when a stone obstructs or an infection takes hold. Fever and urinary symptoms are the clues.

Diagnosis of Pain Under Right Breast

Doctors ask questions about whether the pain is sharp or dull, constant or colicky, linked to meals or to breathing; and what other symptoms are present, like fever, jaundice, urinary changes, and breathlessness.

Examination includes pressing along the chest wall and under the right rib cage, assessing the abdomen for organ tenderness, and checking the flank when a kidney cause is possible. 

Diagnostic tests:

• Abdominal ultrasound to detect gallbladder stones, cholecystitis, and liver assessment.
• Liver function tests and hepatitis markers identify liver issues.
• Urine dipstick and kidney ultrasound for infection or stones.
• Blood tests like full blood count, CRP, pancreatic enzymes, and kidney function.
• A CT scan performed when an ultrasound is inconclusive or an organ complication is suspected.
• Chest X-ray and ECG to evaluate lung, pleural and cardiac causes when relevant.

Treatment for Pain Under Right Breast

The treatment follows the diagnosis. These are:

• Costochondritis and muscle strain: 
  • Anti-inflammatory medicines
  • Rest 
  • A warm compress 
  • Physiotherapy helps with persistent or recurring muscle pain. 
• Gallbladder disease: 
  • Recurrent gallstone pain is treated with laparoscopic removal of the gallbladder. 
  • Acute cholecystitis may need antibiotics and a hospital stay. 
  • Cutting back on fatty and fried foods helps manage symptoms.
• Liver conditions: 
  • Viral hepatitis is managed based on the causative virus. 
  • A liver abscess needs drainage and antibiotics. 
• Acid reflux and gastritis: 
  • Smaller meals, dietary modification and not lying down after eating are the first steps. 
  • Antacids or proton pump inhibitors control acid. 
• Lung and pleural causes: 
  • Bacterial pneumonia needs antibiotics.
  • Viral pleuritis is managed with rest and anti-inflammatory medicines. 
  • A pulmonary embolism requires immediate anticoagulation in the hospital.
• Kidney and gas-related causes: 
  • Kidney infections: antibiotics
  • Small kidney stones with fluids and pain relief 
  • Large kidney stones need invasive procedures 
  • For trapped gas and IBS, dietary changes combined with antispasmodic medicines make a noticeable difference.

When to See a Doctor

Contact a doctor if:

• The pain is sudden and severe, particularly in the upper right abdomen
• Fever accompanies the pain, especially with nausea and vomiting
• The skin or the whites of the eyes have turned yellow
• Breathlessness comes on alongside the chest or abdominal pain
• Urine is dark or stools have become pale
• Pain followed a direct blow or injury to the abdomen
• Pain keeps returning, particularly after meals
• Standard pain relief is not controlling it.

Conclusion

Pain under the right breast covers a wide range of causes. A muscle strain and a gallbladder attack can feel alike from the outside. The liver, right kidney, lung, stomach and the intestine can all be responsible. If this pain has been bothering you whether it comes and goes or has been steadily present do not wait and contact your doctor. Getting the diagnosis early and treating it right is the key to better health. 

FAQs

1. Can gallbladder problems cause pain under the right breast?

Yes, and this is one of the more common organ-related causes. The gallbladder sits tucked under the right lobe of the liver in the upper right abdomen. When a stone blocks its outlet, biliary colic sets in (a pain that builds in waves), typically peaking about an hour after a fatty meal and then either fading or worsening if the stone stays stuck. Cholecystitis adds fever and persistent tenderness to that picture. Both conditions produce pain felt directly under the right rib cage, which for most people sits beneath the right breast. 

2. Is pain under the right breast related to the liver?

It can be. The liver fills the right upper abdomen and is pain-sensitive when stretched. Swelling from hepatitis, fatty liver disease or an abscess generates a dull, pressure-like ache under the right breast. Because the liver tissue itself has no pain receptors, disease here can be quite advanced before any discomfort appears. Yellowing of the skin, dark urine, pale stools, fatigue and loss of appetite are the signs that suggest the liver is involved. Any of these alongside right-sided pain warrants blood tests and imaging promptly.

CARE Medical Team