cellulitis self care basics

Overview

Cellulitis (pronounced sell-you-LY-tis) is a bacterial skin infection that affects the deeper layers of skin and the tissue just below it. It usually starts as a red, swollen, warm, and tender area, most often on the lower leg. With quick treatment, it usually clears up without lasting problems.

Yes, cellulitis is a fairly common infection. Many people experience it at some point in their lives.

Anyone can get cellulitis, but it is more likely in people with diabetes, poor circulation, a weakened immune system, or a skin condition like eczema. It most often appears on the lower legs, but it can occur anywhere on the body.

Symptoms

Common symptoms

• A red, swollen, warm patch of skin that grows over time
• Pain or tenderness of the affected area
• A shiny, tight appearance of the skin, sometimes with small blisters or dimpling
• Swelling and a feeling of heat in the area
• A fever, chills, or generally feeling unwell

Symptoms in children

• Red, swollen, or warm skin, often on the face or near an insect bite
• Crying, drowsiness, or irritability
• A fever and a red area that is spreading quickly

Symptoms in older adults

• Redness or swelling may be harder to see, especially on darker skin
• Sudden confusion or a change in behaviour can be a sign of a serious infection
• A leg or arm may feel heavy or larger than normal

Causes

Main causes

• Bacteria, usually Streptococcus or Staphylococcus, enter the skin through a cut, scratch, insect bite, ulcer, or wound
• Sometimes bacteria can enter through dry, cracked, or peeling skin
• In some cases, there is no obvious break in the skin

Risk factors

• A recent cut, burn, or surgical wound
• Athlete's foot, eczema, or other skin conditions that break the skin
• Diabetes, especially if blood sugar is not well controlled
• Poor circulation in the legs or lymph vessel damage (lymphedema)
• A previous episode of cellulitis
• A weakened immune system (for example, due to certain medications or illnesses)

When to see a doctor

See a doctor urgently if:

• If you have a red, swollen, painful area that is getting bigger, especially with fever or chills
• If you see red streaks or feel very unwell
• If the area is on your face or near your eyes

Book a routine appointment if:

• If you have a small, mild area of redness but no fever and it is not spreading, you should still be seen promptly—within 24 hours

Diagnosis

A doctor will look at your skin and ask about your symptoms and medical history. They may use a pen to mark the edge of the redness so you can notice if it spreads.

Tests that may be done

• In most cases, no tests are needed
• A blood test may be done if the infection seems severe or you have a high fever
• A small swab from the skin or wound might be taken, though it doesn't always show bacteria
• If the doctor suspects a deeper infection, they may order an ultrasound or MRI

What to expect at your appointment

The doctor will usually prescribe an antibiotic and give you advice on resting and elevating the area. You may be asked to draw a line around the redness to track any spread. If there are concerns about a severe infection, they may send you to hospital.

Treatment

Treatment focuses on killing the bacteria with antibiotics. Most people take antibiotics by mouth for 5 to 10 days. In more serious cases, you may need intravenous (IV) antibiotics in a hospital. Alongside medicine, careful self-care helps you recover and prevent future episodes.

Self-care at home

• Take the full course of antibiotics exactly as prescribed—even if you start to feel better
• Rest the affected limb and elevate it above the level of your heart to reduce swelling, when possible
• Keep the skin clean and dry, but do not scrub or pop any blisters
• Use a clean, cool cloth or sterile saline dressing to soothe the area, if your doctor agrees
• Drink plenty of fluids to help your body fight the infection
• Monitor the area for any spread of redness—using the mark your doctor made as a guide
• Avoid swimming, hot tubs, or soaking the affected skin until it has healed

Medical treatments

A doctor will prescribe antibiotics, usually in tablet or capsule form. For a more severe infection, you may need antibiotics through a drip (IV) in a hospital. You may also be advised to take an over-the-counter pain reliever for discomfort. Always check with your doctor or pharmacist before taking any medicine, and never share antibiotics or stop early.

When is surgery considered?

In rare cases, if an abscess (a pocket of pus) forms, a doctor may need to drain it. If any tissue has died, a small operation to remove it may be needed. This is uncommon.

Living with this condition

While you recover, rest as much as possible and keep the infected area clean and protected. It can help to mark the area with a pen as your doctor showed you. Ask for help with daily tasks if you feel unwell, and take time off work or school if you need it.

Lifestyle tips

• Moisturise dry or cracked skin to keep it healthy
• Wear supportive shoes and protect your feet from injury
• Treat athlete's foot promptly
• Keep cuts and grazes clean and covered with a plaster until they heal
• Manage long-term conditions like diabetes carefully

Diet and exercise

Eating a balanced, nutritious diet supports your immune system. Gentle movement is fine once you start feeling better, but avoid exercise that puts strain on the infected area until it has healed. Avoid swimming or sitting in hot baths until the skin is intact.

Mental health and emotional wellbeing

Worrying about an infection is normal, especially if you've had cellulitis before. If you feel anxious or low, talk to your doctor or a trusted friend. They can support you. If you ever have thoughts of harming yourself, please contact your local crisis helpline or a mental health urgent care service right away.

Prevention

You can lower your risk. Keep your skin clean and well moisturised, treat any cuts or scratches promptly, and manage conditions like diabetes or lymphedema. Pay special attention to your feet if you have poor circulation.

Vaccines

There is no vaccine that specifically prevents cellulitis. However, staying up to date with recommended vaccines, such as tetanus, can help prevent infections that start from wounds. Ask your doctor what vaccines are recommended for you.

Screening programmes

If you have repeated episodes of cellulitis, your doctor may check for underlying conditions like diabetes, poor circulation, or fungal infections. Treating these can help prevent future infections.

Complications

If left untreated

• The infection can spread deeper into the skin and tissues
• Bacteria can enter the bloodstream, causing sepsis—a life-threatening reaction
• Abscesses (collections of pus) may form and need draining
• In rare cases, serious tissue damage (necrotising fasciitis) can occur

Long-term outlook

With prompt treatment, most people with cellulitis recover fully within a week or two. The redness and swelling may take a little longer to fade. Taking simple precautions with your skin can greatly reduce the chance of it coming back. Your healthcare team will be there to guide you through every step.

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