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Published on: 8/18/2026

What Might Cause Chest Pain over the Left Breast?

Chest pain over the left breast is often caused by costochondritis, an inflammation of the cartilage connecting the ribs to the breastbone. In some cases, it may also stem from complications related to breast implants, such as capsular contracture or implant rupture. Other potential causes include muscle strain, nerve irritation, or underlying cardiac conditions, so accurate identification of the source is important.

Because symptoms can overlap between minor and more serious conditions, it's worth taking a few minutes to clarify what's going on. A free, instant, online symptom check can help you understand possible causes based on your specific situation and guide you on whether home care, a doctor's visit, or urgent evaluation is the right next step.

Reviewed for medical accuracy: 07/14/2026

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Explanation

When you feel pain over your left breast, one common cause is costochondritis. This is when the cartilage connecting your ribs to your breastbone becomes inflamed, making the chest wall sore. If you have breast implants, sometimes they can cause unusual or atypical chest pain. This might happen if there is a reaction around the implant, such as slight inflammation or changes in the tissue, though these issues are usually not very dangerous.

Additionally, while chest pain in this area is often due to musculoskeletal issues, doctors also keep an eye out for heart-related problems or other conditions as part of a full check-up. To figure out the exact reason for your pain, you can start by using Ubie's free AI-powered symptom checker to get personalized insights about your symptoms before seeing a doctor.

A healthcare provider will ask you questions about when the pain started, its type, and other symptoms you might be experiencing. They might also perform a physical exam or order tests, like a chest x-ray, to get a clear picture of what's happening. If your pain is new, getting worse, or accompanied by other symptoms like trouble breathing or pressure in the chest, it is important to seek medical attention promptly.

(References)

  • Azis KA, Al-Chalabi MMM, Mat Johar SFN, Wan Sulaiman WA. Atypical Chest Pain in a Patient With Breast Implant. Cureus. 2023 Apr 18;15(4):e37751. doi: 10.7759/cureus.37751. PMID: 37214021; PMCID: PMC10193515.

  • Schumann JA, Sood T, Parente JJ. Costochondritis. [Updated 2024 Apr 20]. In: StatPearls [Internet].

  • Johnson K, Ghassemzadeh S. Chest Pain. [Updated 2022 Dec 14]. In: StatPearls [Internet].

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