Overview
Cellulitis is a common skin infection that happens when bacteria spread through the skin to deeper tissues. Most cases are mild and last several days to a couple of weeks. But cellulitis can sometimes progress to a more serious infection, causing severe illness that affects the whole body (sepsis) or other dangerous problems.
Treatment is needed to help control the infection and reduce symptoms.
Some people are at higher risk for cellulitis, such as those who have diabetes, a weakened immune system, or edema. They also tend to get sicker from cellulitis. And they are more likely to get cellulitis again.
Cellulitis may be treated without doing tests to find out what caused it. But your doctor may do tests, if needed, to look for a specific bacteria, like methicillin-resistant Staphylococcus aureus (MRSA).
The doctor has checked you carefully, but problems can develop later. If you notice any problems or new symptoms, get medical treatment right away.
What are the symptoms of cellulitis?
At first, the infected area will be warm, red, swollen, and tender. If the infection spreads, you may have a fever, chills, and swollen lymph nodes.
Cellulitis can occur anywhere on the body. In adults, it often occurs on the legs, face, or arms. In children, it is most common on the face or around the anus.
How is cellulitis diagnosed?
Doctors are often able to diagnose cellulitis based on your symptoms and a physical exam. In most cases, you won't need further testing.
But tests sometimes may be done to find out what's causing your symptoms and to rule out other problems. For example, you may need blood tests, an ultrasound, or an imaging test such as a CT scan or an MRI.
How is cellulitis treated?
Cellulitis is treated with antibiotics. If the infection is mild, you may be able to take antibiotic pills at home.
If the infection is severe, you may need to be treated in a hospital so that you can get IV antibiotics directly into your bloodstream, along with any other care you may need.
Be sure to follow your doctor's instructions about medicine and skin care. To help with your recovery and to feel better:
- Take all of your medicine as prescribed. Don't stop taking it just because you feel better. You need to take the full course of antibiotics.
- Elevate the affected area to reduce swelling. Warm compresses may also help.
- Use pain relievers as needed.
How can you help prevent cellulitis?
If you are at risk for cellulitis, you can take steps to help prevent it. If you've had cellulitis before, these steps may help prevent it from coming back.
- Take good care of your skin. Keep it clean, and use lotion to prevent drying and cracking.
- Check your feet and legs often. This is especially important if you have diabetes.
- Treat any skin infection right away.
- Ask your doctor if you need to take antibiotics or other medicine on a regular basis to prevent cellulitis.
- If you have edema, ask your doctor about wearing compression stockings or sleeves.
Cellulitis: When to call
Call your doctor now or seek immediate medical care if:
- You have signs that your infection is getting worse, such as:
- Increased pain, swelling, warmth, or redness.
- Red streaks leading from the area.
- Pus draining from the area.
- A fever.
- You get a rash.
Watch closely for changes in your health, and be sure to contact your doctor if:
- You do not get better as expected.