What could be causing chest pain on the right side under the breast?

When you feel pain on the right side of your chest just under the breast, it may be due to a problem with the structures outside of your heart. One common cause is costochondritis. This happens when the cartilage that connects your ribs to your breastbone becomes inflamed, and it often causes sharp or aching pain in a specific spot. Muscle strain from physical activities or injuries can also result in chest wall pain in that area.

Another possibility is that the pain comes from the breast tissue itself. Changes in breast tissue, whether related to hormonal shifts or benign conditions, can sometimes be felt as pain under the breast. It is also possible that issues like trauma or even nerve irritation could be contributing to the discomfort.

Because chest pain can have many causes, it is a good idea to get personalized guidance. You can start by using a free symptom checker to better understand what might be causing your discomfort, and then follow up with a doctor who can take a closer look at your symptoms, ask questions about the pain, and help decide if you need further tests or treatment.