Medical Oncologist
After your operation
Wound infection after breast surgery: signs and action
Four signs together point to infection: redness that is spreading rather than static, heat, increasing pain, and feeling unwell or feverish. Any of those, and particularly a fever, means ringing the ward the same day. This page explains what is normal healing, what is not, and why acting early changes everything.
MM
Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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The short answer
How do I know if my wound is infected?
Four signs together: redness that is spreading rather than static, heat, increasing pain, and feeling unwell or feverish. Any of those, and particularly a fever, means ringing the ward the same day rather than waiting for your next appointment.
What is normal in the first week
A thin line of pink right at the wound edge, bruising that spreads downwards with gravity, and soreness that eases day by day. Clear or slightly blood-tinged ooze in the first days is also common.
What is not
Redness spreading outwards across the skin, the area becoming hot to touch, pain that is increasing rather than settling, thick or foul-smelling discharge, or a fever. Those are the four that matter.
Why acting early matters so much
A wound infection caught early is usually a course of tablets. Left for a week it can mean admission, drainage in theatre, and a delay to chemotherapy or radiotherapy. The difference is almost entirely about how quickly it is reported.
Get the ward number before discharge and keep it somewhere your family can find it, not only in your phone.
!
Ring the same day, do not wait for clinic
Contact the hospital immediately if you have a fever or are shivering, if redness is spreading outwards from the wound, if the area is hot and increasingly painful, if there is thick or foul-smelling discharge, if the wound edges are separating, or if you simply feel very unwell. Do not start leftover antibiotics from a previous illness and do not wait to see whether it settles overnight.
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Expected healing, and infection
Expected
Report the same day
A thin pink line right at the wound edge
Redness spreading outwards across the skin
Soreness that eases day by day
Pain that is increasing
Bruising spreading downwards with gravity
The area hot to the touch
A little clear or blood-tinged ooze early on
Thick, cloudy or foul-smelling discharge
Feeling tired but otherwise well
Fever, shivering, or feeling generally unwell
What is done
How an infected wound is treated
What is needed depends almost entirely on how early it is caught.
Antibiotic tablets
The usual treatment for early skin infection. Finish the course even once the redness fades, and go back if it is not clearly improving within a couple of days.
A swab of the wound
Taken if there is discharge, to identify the organism and confirm the antibiotic is the right one. The result takes a few days and may change your tablets.
Ask whether a swab was sent.Admission for intravenous antibiotics
Where the infection is spreading, you have a fever, or tablets are not working. Usually a short stay while it is brought under control.
Drainage, sometimes
An infected collection or an abscess needs the pus let out, either with a needle or in theatre. Antibiotics alone rarely clear a collection.
Higher risk if you
- Smoke
- Have diabetes that is not well controlled
- Had reconstruction or a long operation
Talk to our team
Have a question about your situation?
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Words you will hear
The vocabulary, in plain language
- Cellulitis
- Infection spreading through the skin. Red, hot and tender, treated with antibiotics.
- Abscess
- A walled-off pocket of pus. Usually needs draining as well as antibiotics.
- Wound swab
- A sample taken from the wound to identify the organism and check the antibiotic is the right one.
- Dehiscence
- The wound edges separating. Uncommon, and a reason to be seen the same day.
- Skin flap necrosis
- Preserved skin losing its blood supply and dying. Mainly a risk after skin-sparing surgery and reconstruction.
- Implant loss
- Having to remove a reconstruction implant because infection cannot be cleared around it. Uncommon, and why infection is taken seriously after reconstruction.
Being straight with you
What it means for the rest of your treatment
A wound infection treated promptly usually costs you nothing beyond a course of tablets. One that is left can delay chemotherapy or radiotherapy by weeks, and after reconstruction it can mean losing an implant. That is the honest reason for urgency.
It is not a sign of poor hygiene
Women often feel blamed, or blame themselves. Infection after surgery is largely determined by the operation, your circulation, diabetes control and whether you smoke. Reporting it early is the only part genuinely within your control.
Do not treat it yourself
Leftover antibiotics from a previous illness are the wrong drug, the wrong dose, or too short a course, and taking them makes the swab useless. Applying turmeric, oils or poultices to an open wound adds an infection risk rather than removing one.
Be persistent if it is not improving
If you were given tablets and the redness is still spreading after a couple of days, go back. Do not wait to finish the course before saying it is not working. Escalating early is what avoids an admission.
Mark the edge so you can see what it is doing
Draw a line around the redness with a pen and write the time beside it. At the next check you can see immediately whether it is spreading, static or shrinking. This is the single most useful thing you can do at home, and it turns a vague worry into something you can describe precisely on the telephone.
Commonly believed
What people do when a wound looks angry
We will see if it settles by morning.
This is the decision that turns a course of tablets into an admission. Spreading redness with a fever moves quickly overnight. Ringing the ward costs nothing and they would far rather hear from you early.
We have antibiotics left over from last time.
They are likely the wrong drug or dose, and taking them makes a wound swab useless, so the team cannot tell which antibiotic you actually need. It also raises resistance. Ring first and be prescribed properly.
Turmeric paste or oil on the wound will help.
Applying anything to a healing surgical wound adds an infection risk rather than reducing one. Keep it clean and dry as your team instructed. Traditional remedies have their place, and an open wound is not it.
Any redness means infection.
A thin pink line at the wound edge is normal healing, and bruising travels downwards and looks dramatic without meaning anything. What matters is redness spreading outwards, heat, increasing pain and fever, particularly together.
Questions we are asked
Common questions about wound infection
How soon after surgery does infection usually appear?
Most often in the first week or two, though it can be later, particularly after reconstruction. The pattern that matters is a wound that was settling and then becomes more red, more painful and hot. Improvement followed by deterioration is the signal to act.
Will it delay my chemotherapy?
It can, because starting chemotherapy with an active infection is unsafe. Treated promptly the delay is usually short. Left for a week it can be considerably longer, which is the practical reason for ringing early.
Can I shower if the wound is red?
Follow the instructions you were given and do not soak in a bath. If the wound is leaking or the redness is spreading, ring before your next wash so they can advise, because dressings may need changing more often.
What if I have an implant reconstruction?
Report anything sooner rather than later. Infection around an implant is harder to clear and occasionally means the implant has to come out. Your team will usually want to see you the same day rather than treating over the phone.
Is a small amount of ooze normal?
Clear or lightly blood-tinged ooze in the first few days is common. Thick, cloudy, green or foul-smelling discharge is not, and neither is fluid that starts after the wound had already dried up. Ring about those.
Does diabetes make it more likely?
Poorly controlled diabetes does, because high blood sugar impairs healing and immune response. Keeping your sugars in range around surgery genuinely lowers the risk. Tell your team so your control is monitored more closely.
Should I finish the antibiotics if I feel better?
Yes, complete the course as prescribed. Stopping early is a common reason infections come back, often harder to treat. If you cannot tolerate them, ring rather than simply stopping, because an alternative can be prescribed.
Will it affect how my scar looks?
An infection can leave a wider or more uneven scar, particularly if the wound edges separated. Scars keep improving for a year or more. If the result bothers you once healing is complete, ask what can be done rather than assuming nothing can.
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Sources
- Cancer Research UK — Problems after breast cancer surgery
- National Cancer Institute — Surgery to treat cancer
- Breast Cancer Now — Recovering from breast surgery
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.