The upper left side of your breast hurting near your armpit can be due to several reasons, most of which are not serious. Common causes include hormonal fluctuations, an improperly fitted bra, or a muscle strain.
Potential Causes of Breast and Armpit Pain
Here's a breakdown of potential causes:
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Hormonal Changes: Fluctuations in hormones, particularly during menstruation, pregnancy, or menopause, can cause breast tenderness and pain.
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Ill-Fitting Bra: A bra that's too tight or doesn't provide enough support can put pressure on your breast tissue and muscles, leading to pain, especially near the armpit area where the bra band often sits.
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Muscle Strain: Overexertion or injury to the chest or arm muscles can cause pain that radiates to the breast and armpit. This can be caused by activities like weightlifting, rowing, or even repetitive arm movements.
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Costochondritis: Inflammation of the cartilage that connects your ribs to your breastbone can cause chest pain that may radiate to the breast and armpit.
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Fibrocystic Breast Changes: Many women experience lumpy or rope-like breast tissue, known as fibrocystic changes. These changes are normal and can cause breast pain, especially before menstruation.
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Cysts: Breast cysts are fluid-filled sacs that can develop in the breast tissue. They can sometimes cause pain and tenderness.
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Lymph Node Swelling: Swollen lymph nodes in the armpit can sometimes cause pain or discomfort that feels like it's coming from the breast area. This can be due to an infection or inflammation.
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Less Common Causes: While less likely, breast pain can sometimes be associated with more serious conditions like breast cancer, although pain is not usually the primary symptom. Inflammatory breast cancer is a rare form that can present with pain and swelling.
What You Can Do
Most breast and armpit pain can be managed at home:
- Over-the-counter pain relievers: Medications like ibuprofen or acetaminophen can help reduce pain and inflammation.
- Warm compress: Applying a warm compress to the affected area can help soothe the muscles and relieve pain.
- Supportive bra: Wearing a well-fitting, supportive bra can help reduce pressure on your breast tissue. Consider getting professionally fitted.
- Avoid caffeine: Some people find that reducing caffeine intake can help reduce breast pain.
When to See a Doctor
While most breast and armpit pain isn't serious, it's important to see a doctor if you experience any of the following:
- A new lump or thickening in the breast or armpit
- Persistent pain that doesn't go away with home treatment
- Nipple discharge (especially bloody discharge)
- Changes in the size or shape of your breast
- Skin changes on your breast, such as dimpling or redness
