Sudden Breast Pain: Strain or Sprain? - Internal Medicine

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Is it a strain or a sprain?


Hello Doctor: I would like to ask about occasional sharp pain under my breast, near the side.
A few days ago, it was on the left side, and now it has switched to the right side.
I also feel some discomfort near my armpit when I deliberately raise my arm.
Could this be due to a sports injury or from sleeping on the same side? I visited a traditional Chinese medicine practitioner who mentioned that I have some misalignment and suggested massage.
Although I have improved a lot, I still occasionally feel discomfort that comes and goes.
I am concerned that there might be an underlying health issue.
However, during my recent follow-up appointment, the doctor performed a physical examination and said there were no lumps and that I shouldn't worry.
They also mentioned that if it hurts, it is generally not serious.
I would like to know if this is a common experience based on your expertise.
Thank you for your response.

Mi Ni, 20~29 year old female. Ask Date: 2020/09/01

Dr. Hong Yuanbin reply Internal Medicine


Hello, based on your description, it is indeed most likely a strain.
The symptoms of a strain are typically localized to one side and can worsen with changes in hand position.
Generally, for a strain, it is recommended to rest and allow the affected area to heal.
If the pain persists, you might consider applying some analgesic ointment.
As for your mention of "the pain is not a big deal," it usually does not imply that the strain is insignificant, but rather that "the pain is less likely to be associated with serious conditions like cancer." Thank you for your inquiry.

Reply Date: 2020/09/01

More Info


Understanding sudden breast pain can be a complex issue, as it encompasses a variety of potential causes ranging from benign to more serious conditions. Based on your description, it seems that you are experiencing intermittent pain in the breast area, which shifts from the left side to the right side, and is accompanied by discomfort near the armpit when you raise your arm. This pattern of pain could indeed be related to muscle strain or sprain, particularly if you have been engaging in physical activities or sleeping in a position that puts strain on your upper body.

Muscle strain occurs when the fibers of a muscle are overstretched or torn, often due to excessive physical activity or improper lifting techniques. In your case, if you have been exercising or performing activities that involve the upper body, it is possible that the pain you are experiencing is due to muscle strain. The fact that the pain shifts from one side to the other and is associated with arm movement suggests that it may be related to the muscles and connective tissues in the chest and shoulder area rather than a direct issue with the breast tissue itself.

Additionally, the discomfort you feel near the armpit when raising your arm could indicate involvement of the muscles in the shoulder girdle, such as the pectoralis major or minor, or even the serratus anterior. These muscles can become tense or strained, leading to referred pain in the breast area. It is also worth noting that poor posture, especially if you tend to lean to one side while sleeping or sitting, can contribute to muscle imbalances and discomfort.

Your visit to the doctor, where they performed a physical examination and found no hard lumps, is reassuring. The absence of palpable masses is a positive sign, as it reduces the likelihood of serious conditions such as breast cancer or significant breast pathology. It is common for benign breast pain to occur, especially in relation to hormonal changes, but your symptoms appear to be more musculoskeletal in nature.

To alleviate your symptoms, consider the following recommendations:
1. Rest and Modify Activities: If you suspect that your pain is related to physical activity, take a break from strenuous exercises that involve the upper body. Allow your muscles to recover.

2. Apply Heat or Cold: Using a heating pad can help relax tense muscles, while ice packs can reduce inflammation if there is any swelling.

3. Gentle Stretching and Strengthening: Engage in gentle stretching exercises for the chest and shoulder area to improve flexibility and reduce tension. Strengthening exercises for the upper back can also help improve posture and reduce strain on the chest muscles.

4. Posture Awareness: Be mindful of your posture throughout the day. Ensure that your workstation is ergonomically set up, and try to avoid leaning to one side while sitting or sleeping.

5. Consult a Physical Therapist: If the pain persists, consider seeing a physical therapist who can provide targeted exercises and treatments to address any underlying muscular issues.

6. Follow-Up with Your Doctor: If your symptoms do not improve or worsen, it is important to follow up with your healthcare provider for further evaluation. They may consider imaging studies or refer you to a specialist if necessary.

In conclusion, while sudden breast pain can be alarming, it is often related to musculoskeletal issues rather than serious medical conditions. Your doctor’s reassurance and the absence of hard lumps are encouraging signs. By taking proactive steps to manage your symptoms and addressing any potential muscle strain, you can work towards alleviating your discomfort. Always listen to your body and seek medical advice if you have concerns about your health.

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