Confirming the Disease Name
Breast abscess (Abscess of breast) — This is a medically accepted diagnostic term. It primarily refers to a condition in which mastitis progresses and forms a collection of pus (abscess).
1) Disease Description (Causes and Symptoms)
- Causes and pathophysiology
- In most cases, a bacterial infection causes inflammation in the mammary gland and leads to abscess formation. The main causative organisms are Staphylococcus aureus (including methicillin-susceptible and methicillin-resistant strains) and Streptococcus spp.; anaerobic bacteria or fungi may also be involved in some cases.
- The condition is often caused by bacteria entering through nipple damage during lactation, and milk stasis due to blocked milk ducts promotes infection. It can also occur during non-lactation periods when immunity is weakened by factors such as inverted nipples, smoking, or diabetes.
- Main symptoms
- Local redness, warmth, pain, localized swelling, and a soft mass that feels fluid-filled when touched (fluctuance)
- Systemic fever and chills, enlargement of the axillary lymph nodes
- Nipple discharge (purulent discharge) may occur
2) Treatment Methods
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General principles
- Abscess drainage (incision & drainage or needle aspiration) + appropriate antibiotic treatment + maintaining milk drainage (for breastfeeding patients)
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Medication treatment
- Empirical antibiotics are selected according to the prevalence of MRSA in the local area and the clinical situation.
- Suspected MSSA or streptococci: oral beta-lactams (e.g., dicloxacillin, cephalexin) or other appropriate antibiotics.
- Suspected MRSA (when the local prevalence is high or treatment has failed): clindamycin, trimethoprim–sulfamethoxazole (TMP-SMX), etc. (considering age, breastfeeding status, and drug allergies).
- The antibiotic course is usually 10–14 days; it may be extended based on clinical improvement in severe cases or after drainage.
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Procedures/Surgery
- For a fluid-filled abscess identified by ultrasound, needle aspiration (including irrigation) may be attempted first. Incision and drainage and insertion of a drainage tube may be necessary for recurrent or large abscesses.
- A culture test is performed after drainage to help with accurate antibiotic selection.
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Breastfeeding-related management
- In general, breastfeeding patients are advised to continue draining milk from the painful or abscessed area, which helps prevent recurrence and engorgement (follow the healthcare provider’s recommendations).
- In situations such as when pus is directly discharged from the nipple, temporary discontinuation of breastfeeding may be recommended according to the healthcare provider’s instructions. The safety of the antibiotic for newborns and infants should also be considered when selecting an antibiotic.
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Supportive treatment
- Pain relievers (acetaminophen, NSAIDs if needed) and warm compresses to relieve pain and promote drainage
- Control of underlying conditions such as diabetes
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Precautions (during treatment)
- Inform the healthcare provider about antibiotic allergies, pregnancy or breastfeeding status, and the newborn’s age.
- Before incision and drainage, check for bleeding disorders and whether anticoagulants are being taken.
- If the condition recurs or does not improve after treatment, additional imaging (breast ultrasound or mammography) and a biopsy (to rule out cancer) should be considered.
3) Checklist Before an Outpatient Visit (Items, Records, and Sample Questions)
- Items to prepare/bring
- A list of currently taken medications (including antibiotics and anticoagulants)
- History of previous breast diseases, surgery, or cancer; pregnancy or breastfeeding status
- Recent temperature records (presence or absence of fever), and records of the symptom onset date and progression
- Photographs (breast skin redness, swelling, etc.) — photographs from immediately after symptom onset and from the present can be useful for comparison
- Blood glucose levels (if you have diabetes)
- Items useful to record in advance for the outpatient visit (changes in symptoms)
- Pain intensity (daily changes), discharge (color and amount of discharge from the nipple), respiratory and systemic symptoms (chills and weakness)
- Whether previous antibiotic treatment was received and its effect
- Advance information regarding tests and procedures
- Possibility of incision and drainage, possibility of an ultrasound examination, need for collecting a culture sample, and the possibility of scarring in some cases
4) Examples of General Questions to Ask the Doctor
- What are the expected effects and common side effects of this medication (or procedure)?
- How soon after treatment should I expect the pain and swelling to improve?
- Until when can I continue breastfeeding? (if breastfeeding)
- When is it safe to stop taking the antibiotics?
- What should I be careful about in daily life to prevent recurrence?
5) Examples of Disease-Specific Questions
- (Breastfeeding patient) Is it safe to continue breastfeeding in my current condition? Is it okay to feed my child milk from the infected breast?
- (Non-breastfeeding patient or in cases of repeated recurrence) Could this abscess be related to inflammatory breast cancer or ductal abnormalities (such as nipple inversion), and are a biopsy or imaging tests needed?
Additional precautions
- A breast abscess during a non-lactation period may recur or progress to a chronic breast abscess or mammary fistula, so monitoring the treatment course and, when necessary, ruling out malignant disease through a biopsy are important.
- If you have a high fever or signs of systemic toxicity, the abscess area rapidly enlarges, or there are changes in breathing or consciousness, seek emergency medical care immediately.