In short. What to do now, and what not to do at home, is a list of observations and restraints rather than a treatment plan. Mark the margin of any redness with the time, photograph the wound in good light, keep the dressing as instructed, and describe four facts to your team; everything else waits for assessment.

Key points

  • Mark the outer edge of redness and write the time, because direction is the finding.
  • Photograph the wound in good light with the mark in the frame.
  • Describe four facts: where redness reaches, whether it moved, the discharge, and fever.
  • Do not take a leftover antibiotic; it suppresses the infection and spoils a sample.
  • Do not squeeze the wound, cover spreading redness, or remove the dressing.

What can you usefully do before you are seen?

Most of what a patient can usefully do about a wound that worries her is to describe it accurately and get it seen. Mark the outer margin of any redness and write the time beside it. Photograph the wound in good light with the mark in the frame. Keep the wound dressed as your team instructed.

Mark the edge and record the time

The mark is what turns an impression into an observation. When you next look, the question is not how red the area is but whether the margin has moved past the mark. A photograph with the time recorded does the same job and is easier to send to your team.

What should you say when you telephone?

Contact the team and describe four things: where the redness reaches, whether that edge has moved, what the discharge looks like, and whether you have a fever or feel unwell. There is no need to be comprehensive. Those four facts decide almost everything about what happens next, and they are all things you can observe. A patient who telephones and says that the redness has moved a finger's width past a mark made two hours ago, that the discharge has turned yellow, and that she has chills, has given a clearer account than a page of description would. If the team cannot be reached, call the hospital main line.

What to leave alone

Do not take an antibiotic you have at home. Do not squeeze or press the wound. Do not cover a spreading redness. Do not remove the dressing to inspect the wound. Do not clean the wound with anything your team has not specified.

Situation What to do What not to do Why it matters
Redness at the wound edge Mark the outer margin and write the time Do not rely on memory of how it looked A margin that has moved is the finding
The wound itself Photograph it in good light with the mark in frame Do not remove the dressing to inspect it The dressing is management already in place
Discharge Describe its appearance when you call Do not clean with anything unspecified Cleaning removes the discharge the assessment depends on
Spreading redness Contact the team and say where the edge has reached Do not cover it Covering hides the margin, which is the finding
Fever or chills Say so when you telephone Do not wait for a call back Waiting is what the advice rules out in this situation
The wound generally Keep it dressed as instructed Do not squeeze or press it Pressure can spread infection into deeper tissue
Reaching the team Call the hospital main line if the team cannot be reached Do not take an antibiotic you have at home It treats the wrong organism and makes a sample less likely to identify anything

Why those restrictions exist

They have one thing in common: each destroys information that the assessment depends on, or moves infection further than it had already gone. A partially treated infection, a squeezed wound, a covered margin and a wound cleaned of its discharge all present the clinician with a less clear picture than the one that existed before. An antibiotic kept at home treats the wrong organism or treats it inadequately, and by partially suppressing the infection it makes a sample less likely to identify anything. Squeezing can spread infection into deeper tissue. Covering hides the margin. Removing the dressing removes the management that was put in place.

When should you stop waiting?

Do not wait for a call back when the redness is spreading or you have fever with chills. A wound that is healing is best served by being left as it was dressed and being looked at on schedule. A wound that is infected is best served by being seen early and described accurately. Neither of those is improved by anything done at home.

Sources

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Internal links

Frequently asked questions

Can I use an antibiotic left over from before?

No. An antibiotic has to match the organism causing the infection, and one chosen at random treats the wrong cause or treats it inadequately. It also partially suppresses what is there, which makes a sample less likely to identify anything and leaves the next clinician working from a less clear picture.

Should I clean the wound more often?

Follow the instructions you were given and do not add anything to them. Cleaning more often, or with an antiseptic or alcohol, can irritate healing tissue and removes the discharge that the assessment depends on. Where the wound needs cleaning, your team will say how and with what.

Should I cover the red area?

Do not cover a spreading redness in order to keep it out of sight or to protect it. Covering hides the margin, which is the finding that decides what happens next. Keep the wound dressed as instructed, and let the skin around it be seen, or photograph it with the time recorded.

Risks & Limitations

  • Redness and warmth are the first stage of healing as well as the first sign of infection. Direction and speed decide the question, so a margin that advances over hours is the finding rather than the presence of redness.
  • An infection that is spreading can move quickly. Spreading redness, a red line tracking up a limb, fever with chills, and skin turning dusky or black all need emergency care rather than a review appointment.
  • An antibiotic has to match the organism. A course taken from a drawer, or one that is stopped early, treats the wrong cause or treats it inadequately and makes the next assessment harder.
  • An implant has no blood supply of its own, so an infection beside it behaves differently and can be present with far less to see. It is seen the same day rather than watched.
  • Where an infection needs an operation, the aim is to preserve tissue that is still viable and to end the infection. It cannot restore tissue that has already been destroyed.
  • No assessment predicts an infection exactly, which is why the warning findings are taught to every patient rather than only to those at higher risk.

When to Seek Care

  • Redness that is spreading outward, or a red line tracking up a limb &mdash — seek emergency care now.
  • Fever with chills, shivering, or feeling generally very unwell &mdash — seek emergency care now.
  • Skin around the wound turning dusky, blistered or black &mdash — seek emergency care now.
  • Pus, or discharge that has become thick, yellow-green or foul-smelling — contact the team the same day.
  • Increasing pain, heat and swelling after the first week, or a wound that is opening.
  • A red, hot, tender area around an implant or an injected area.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) - patient safety guidance on surgical site infection
  • National Institute for Health and Care Excellence (NICE, UK) - guidance on surgical site infection prevention and management
  • Cochrane Library - systematic reviews on antibiotic prophylaxis and wound care in surgery
  • British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS) - patient information on wound care after surgery
  • Chinese Medical Association Plastic Surgery Branch - clinical guidance

Medically reviewed by Shaoliang Wang, MD (王韶亮), Center Director, Plastic Surgery & Aesthetics Medical Center. Last reviewed: 19 September 2026.

This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.