Cellulitis
Cellulitis is a common and serious type of skin infection. It can develop when bacteria get into a cut, break, or opening in the skin. If you have lymphedema or a weak immune system, your risk for cellulitis is higher.
There are steps you can take to help prevent or manage cellulitis during and after cancer treatment
Risk factors for cellulitis
Anything that creates a break or opening in the skin, allowing bacteria to enter, can cause cellulitis.
Certain conditions increase your risk of cellulitis:
- A weakened immune system
- A past history of cellulitis
- Lymphedema
- Radiation dermatitis
- Rashes or skin conditions such as eczema or psoriasis
- Skin trauma or injury such as insect bites, cuts, or abrasions
- Pressure sores or other wounds
- Poor circulation
- Tobacco use
The more of these factors you have, the higher your risk of developing cellulitis.
What are the symptoms of cellulitis?
The signs and symptoms of cellulitis can be different depending where on the body it happens. But generally, areas of cellulitis often have:
- Red or warm skin
- Scaly, broken skin
- New or worse pain or swelling
- Signs or symptoms of infection such as fever, chills, weakness, or muscle aches
Cellulitis is a serious medical condition. If you have signs or symptoms of cellulitis, talk to your doctor or cancer care team right away. If you can’t reach them, go to the emergency department.
Treatment for cellulitis
Since cellulitis is most often caused by a bacterial infection, antibiotics are the main treatment.
Depending on the location and severity, antibiotics and antimicrobials can be applied to the affected area topically (such as a cream or ointment), taken orally (as pills), or given intravenously (through an IV). How long you will need antibiotics depends on how severe the infection is, if it’s spread to other areas, and if you have a weakened immune system.
Left untreated, cellulitis can develop into more serious or life-threatening conditions such as:
- Abscess (a pocket or collection of pus)
- Bacteremia or sepsis (blood infection)
- Endocarditis (heart infection)
- Osteomyelitis (bone infection)
When to get medical help
If you have skin changes such as redness, warmth, swelling, or scaly/peeling skin, talk to your doctor or cancer care team.
If you also have signs or symptoms of an infection (such as fever or chills), get medical help right away. If you can’t reach your doctor, go to the emergency room.
Learn more about infections in people with cancer.
Tips for preventing and managing cellulitis
The best way to prevent cellulitis is to take care of your skin:
- Keep your skin clean.
- Wash with a mild soap and water unless you’ve been told otherwise.
- Wear protective gloves or shoes to do activities that could damage or cut your skin.
- Use lotion to keep your skin from becoming dry and cracked.
- Protect your skin from the sun and UV radiation. Use a sunscreen with 30 SPF or higher.
- Avoid extreme heat and sunburns. These can trigger cellulitis.
- Keep your nails trimmed short, but don’t cut or trim your cuticles.
- Don’t get professional manicures or pedicures during cancer treatment or if you have a weakened immune system.
- Always use a clean razor on clean skin, especially when you shave your underarms.
- Use an insect repellent to prevent bug bites when outdoors.
Some doctors also suggest having blood draws, IVs, and shots done in the arm that is not on the side of your treatment, if possible.
Not all experts agree with this, because the studies don’t show a clear cause and effect between cellulitis and these types of procedures. For that reason, it’s important to talk to your doctor or cancer care team about whether you need this restriction.
Learn more
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- References
The American Cancer Society medical and editorial content team
Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as editors and translators with extensive experience in medical writing.
American Society of Clinical Oncology (ASCO). Skin conditions. Cancer.net. Content no longer available.
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Spelman D, Baddour LM. Cellulitis and skin abscess: Epidemiology, microbiology, clinical manifestations, and diagnosis. UpToDate. UpToDate, Inc; 2024. Updated June 2024. Accessed August 23, 2024. https://www.uptodate.com/contents/cellulitis-and-skin-abscess-epidemiology-microbiology-clinical-manifestations-and-diagnosis
Last Revised: September 12, 2024
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