Wound Infection
Most wounds heal without problems, but bacteria can sometimes invade and cause infection. Recognizing the signs early and getting timely treatment prevents complications.
Table of Contents
Quick Facts
- ICD-10: T81.4
- Common organisms: Staph aureus, Streptococcus
- Treatment: Cleansing, antibiotics, sometimes drainage
Signs of Wound Infection
- Increasing redness, especially spreading beyond the wound edge
- Increasing pain or tenderness
- Swelling and warmth
- Pus or cloudy drainage
- Foul smell
- Fever or chills
- Failure to heal after 1–2 weeks
Risk Factors
- Diabetes
- Poor circulation
- Immunocompromised state
- Older age
- Contaminated wounds (e.g., animal bites, soil exposure)
- Deep, jagged, or large wounds
- Foreign material in the wound
Treatment
Home care for mild wounds
- Wash thoroughly with soap and water
- Keep covered with a clean bandage
- Change dressing regularly
- Watch for warning signs
Medical treatment
- Oral or IV antibiotics depending on severity
- Drainage of pus or abscess
- Wound debridement (removal of dead tissue) if needed
- Tetanus booster if not up to date
When to See a Doctor
See a doctor for any wound that:
- Has signs of infection
- Is deep, gaping, or won't stop bleeding
- Was caused by an animal or human bite
- Occurred in someone with diabetes or immune problems
- Has not had a tetanus shot in 5–10 years (depending on injury)
Frequently Asked Questions
Should I use hydrogen peroxide on a wound?
Hydrogen peroxide can damage healthy tissue and slow healing. Soap and water are sufficient for cleaning most wounds.
Do all infected wounds need antibiotics?
Not all. Small superficial infections may resolve with thorough cleaning and topical care. Spreading redness, fever, or systemic symptoms usually require antibiotics.
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.
References
- Centers for Disease Control and Prevention. Wound Care and Infection Prevention.