Factors that may increase the chance of cellulitis include:
- A untreated minor injury to the skin such as, a cut, scratch, blister, burn, puncture, or bite
Skin conditions that cause cracking or damage to the skin surface such as:
- Intertrigo—irritation in folds of the skin
- Athlete's foot
- IV drug use
- Venous insufficiency
- Lymphatic problems such as lymphedema
- Having certain conditions such as diabetes, HIV, weakened immune system, kidney or liver disease, obesity, or poor circulation
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You will be asked about your symptoms and medical history. A physical exam will be done. Your doctor will also ask about any recent injuries. The area will be closely examined. The doctor may know it is cellulitis from the appearance of the skin. The outer edge of the redness may be marked. This will help to see if the infection spreads.
Your doctor may do blood tests. Fluid from the area may also be tested to find out what bacteria is causing the problem.
The goal is to get rid of the infection and manage pain. Treatment may last 7-10 days. Most cellulitis will clear up after 1-2 weeks of treatment.
Hospital care may be needed if you have:
- Severe cellulitis
- Diabetes or a weakened immune system
- An infection on your face
Antibiotics will help to clear the infection. Less severe infections may be treated with pills. The medicine may need to be injected or given by IV if the infection is severe. It is important to take all the medicine as given, even if the area looks better.
Pain medication may also be given to help manage pain.
Keeping the area raised can help move fluids out. It may also speed healing.
It is important to protect the skin and stop further damage while you heal. This includes not scratching or rubbing the area. Use and change bandages as recommended by your doctor. Keep the area clean.
To decrease the risk of breaks in the skin:
- Keep your skin clean and dry.
- Moisturize dry skin with lotion.
- Follow your treatment plan for any skin conditions.
- Wear protective gear in sports.
- Be careful around animals. Treat pets with respect to avoid bites.
To help reduce your chance of infections:
- Regularly wash hands and bathe
If a small cut, bite, or other injury occurs:
- Clean cuts or scrapes with soap and water.
- Apply antibiotic ointment.
- Cover wounds with a bandage or dressing.
- Do not scratch wounds.
- Call the doctor if the area becomes red or inflamed.
- If your legs tend to swell, elevate them several times a day and wear support stockings.
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
Edits to original content made by Denver Health.
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American Academy of Dermatology https://www.aad.org
National Institute of Allergy and Infectious Diseases https://www.niaid.nih.gov
Canadian Dermatology Association https://dermatology.ca
Health Canada http://www.canada.ca
Cellulitis. American Academy of Dermatology website. Available at: https://www.aad.org/public/diseases/rashes/cellulitis. Accessed August 17, 2017.
Cellulitis. DermNet New Zealand website. Available at: https://www.dermnetnz.org/topics/cellulitis. Updated July 2016. Accessed August 17, 2017.
Cellulitis. EBSCO DynaMed website. Available at: http://www.dynamed.com/topics/dmp~AN~T116794/Cellulitis . Updated August 14, 2017. Accessed August 17, 2017.
Stevens DL, Bisno AL, et al. Practice guidelines for the diagnosis and management of skin and soft tissue infections: 2014 update by the Infectious Diseases Society of America. Clin Infect Dis. 2014;59(2):147-159.