Pain under your right breast can come from several different structures in that area, including your ribs, gallbladder, liver, lungs, or the breast tissue itself. The right upper part of your abdomen is packed with organs, and pain from any of them can register as discomfort just below or behind the breast. Most causes are manageable, but a few need prompt attention.
Costochondritis: The Most Common Culprit
The cartilage connecting your ribs to your breastbone can become inflamed, a condition called costochondritis. It often feels like a sharp or aching pain right where the ribs meet the chest wall, and it can easily be mistaken for something deeper. The pain typically gets worse when you press on the area, twist your torso, or take a deep breath.
Costochondritis often goes away on its own, though it can linger for several weeks or longer. Over-the-counter pain relievers like ibuprofen, naproxen, or acetaminophen usually help. Applying heat to the area, avoiding movements that aggravate the pain, and gentle stretching can speed things along. If you recently started a new exercise routine, lifted something heavy, or had a prolonged cough from a cold, that’s a likely trigger.
Gallbladder Problems
Your gallbladder sits directly under your liver on the right side, and when it acts up, the pain often lands right below the right breast or ribcage. Gallstones are the usual problem. In the United States, roughly 14 million women and 6 million men between ages 20 and 74 have them, and prevalence climbs with age. More than 25% of women over 60 are affected.
A gallbladder attack typically hits after a fatty meal. Your body releases bile to break down the fat, and if a stone blocks the duct, you get a sudden, intense pain that can last from 30 minutes to several hours. The pain may radiate to your right shoulder blade or your back between the shoulder blades. It often comes with nausea.
Several factors raise your risk: being female (women of reproductive age have twice the risk of men), taking estrogen-containing birth control, obesity, diabetes, rapid weight loss, and diets high in saturated fat and sugar but low in fiber. Genetics account for 25% to 30% of the risk. If you notice a pattern of pain after rich meals, especially with nausea or bloating, gallstones are worth investigating. An abdominal ultrasound is the standard first test.
Liver-Related Pain
The liver sits under the right side of your ribcage, and when it swells, it stretches its outer capsule, which is rich in nerve endings. This produces a dull, aching sensation under the right breast that can feel constant rather than sharp. Conditions that cause this kind of swelling include fatty liver disease, hepatitis, and heart failure that backs up blood into the liver.
Liver pain tends to be less dramatic than gallbladder pain. It’s more of a persistent heaviness or pressure rather than a sudden attack. You might also notice fatigue, loss of appetite, or a yellowish tint to your skin or eyes. If you drink alcohol regularly, carry extra weight around your midsection, or have risk factors for hepatitis, liver swelling is worth considering.
Pleurisy and Lung Issues
The lining around your lungs (the pleura) can become inflamed, usually from a respiratory infection like pneumonia or the flu. When this happens, the two layers of the lining rub against each other like sandpaper every time you breathe. The result is a sharp, stabbing pain that gets noticeably worse when you inhale, cough, or sneeze, and eases when you hold your breath.
Pleuritic pain can spread to your shoulders or back and worsens with upper body movement. If the inflammation is on the right side, it settles right around or below the right breast. Pneumonia on the right side is a common cause, and it usually comes with fever, cough, and feeling generally unwell. This type of pain needs medical evaluation, especially if you’re short of breath or running a fever.
Shingles and Nerve Pain
If you’ve ever had chickenpox, the virus stays dormant in your nerve roots and can reactivate as shingles, usually along a single strip of skin on one side of the body. The torso is the most common location. What makes shingles tricky is that pain, itching, or tingling in the affected area can appear several days before any rash shows up. During that window, you might feel burning or sharp pain under your right breast with no visible explanation.
Once the rash appears as a band of blisters on one side of your body, the diagnosis becomes clear. But if you’re experiencing unexplained burning pain in a strip-like pattern along your ribs, shingles is a possibility worth mentioning to your doctor, especially if you’re over 50 or your immune system is compromised. Early treatment with antiviral medication works best when started within 72 hours of the rash appearing.
Breast Tissue Itself
Pain can originate in the breast rather than beneath it. Breast cysts, which are fluid-filled sacs, can develop deep in the tissue and cause localized pain or tenderness. About 20% of cysts are found in women experiencing cyclical breast pain, the kind that increases before menstruation and improves after. But many cysts cause no symptoms at all and are discovered incidentally during imaging.
Fibrocystic breast changes are extremely common and tend to present as a palpable lump rather than pure pain. If you feel a distinct lump along with the pain, or if the pain follows your menstrual cycle, breast tissue changes are a reasonable explanation. A clinical breast exam and possibly an ultrasound can clarify what’s going on.
How to Tell What’s Causing Your Pain
The character of the pain gives you important clues:
- Sharp pain that worsens when you press on the area or twist: likely musculoskeletal, such as costochondritis or a strained muscle.
- Intense pain after fatty meals, with nausea: points toward the gallbladder.
- Dull, constant ache or heaviness: suggests liver involvement.
- Sharp pain that worsens with every breath: pleurisy or a lung issue.
- Burning pain in a band-like pattern on one side: possible shingles or nerve irritation.
- Pain that worsens before your period: likely breast tissue changes.
Doctors evaluating right upper quadrant pain typically start with your history and a physical exam, then move to blood tests that check liver and pancreatic function, followed by an abdominal ultrasound. If lung problems are suspected, a chest X-ray comes first. The combination of where the pain is, what makes it worse, and what other symptoms you have usually narrows things down quickly.
Signs That Need Immediate Attention
Most causes of pain under the right breast are not emergencies, but some are. Seek care right away if the pain lasts more than a few minutes and comes with trouble breathing, chest tightness, fever with chills, yellowing of your skin or eyes, or severe pain that doesn’t respond to position changes or over-the-counter pain relief. Right-sided chest pain combined with shortness of breath always warrants prompt evaluation to rule out serious lung or heart problems.