
Mastitis is inflammation of the breast tissue. It is common during breastfeeding but can also occur in women who are not breastfeeding. If not treated well, an abscess can develop.
Symptoms
- Redness, warmth, pain and hardness in the breast
- Fever, malaise
- A crack or discharge at the nipple
- A palpable, mobile, painful swelling (suggests an abscess)
Diagnosis and treatment
Examination and ultrasound distinguish inflammation from an abscess. Mastitis usually settles with antibiotics and supportive treatment. If there is an abscess, drainage with a needle under ultrasound or through a small incision may be needed. In breastfeeding mothers, continuing to breastfeed is often advised where possible.
Risks and points to be aware of
- If treatment is delayed, mastitis can turn into an abscess.
- With repeated infections the underlying cause (duct problem, infection) is investigated.
- Rarely, inflammatory breast cancer can mimic infection; always have findings that do not heal examined.
Follow-up and next steps
After treatment, checks continue until symptoms have fully resolved. If it does not heal or recurs often, further tests (imaging, biopsy if needed) are planned.
Contact us without delay if
- High fever and shivering
- Rapidly growing, very painful swelling of the breast
- Findings that do not improve within 2–3 days despite antibiotics
Frequently asked questions
Can I keep breastfeeding with mastitis?
In most cases yes, and it is usually advised; the decision still follows your doctor’s assessment.
Does an abscess always need an operation?
No. Many abscesses can be treated by draining with a needle under ultrasound.


