Living with cellulitis

Overview

Cellulitis is a common bacterial infection of the deeper layers of the skin. It causes the skin to become red, swollen, warm, and painful. It usually affects the lower legs, but it can happen anywhere on the body. It is not the same as cellulite, which is a harmless change in fat under the skin.

Yes, cellulitis is fairly common. It affects people of all ages, but it is more often seen in older adults and in people with certain health conditions like diabetes or a weakened immune system.

Anyone can get cellulitis, but it is more common in people with breaks in their skin, those who have swelling in their arms or legs, people with diabetes, older adults, and people with a lowered immune system.

Symptoms

Common symptoms

• A red, swollen area of skin that feels warm and tender
• The affected area spreads or grows quickly
• Pain in the area
• Fever and chills
• Blisters or dimpled skin on the affected area
• A general feeling of being unwell

Symptoms in children

• Red, swollen, and painful skin, often on the face or legs
• Fever, irritability, or unusual sleepiness
• Crying when the affected area is touched
• Red streaks spreading from the affected area

Symptoms in older adults

• The skin may show less redness, but have more swelling
• Confusion or drowsiness may develop
• Rapid heart rate or low blood pressure in more severe cases
• Loss of appetite or feeling very weak

Causes

Main causes

• Bacteria, usually streptococcus or staphylococcus, entering through a cut, scrape, insect bite, or cracked skin
• Skin conditions like athlete's foot or eczema that create small openings
• Surgical wounds or injection sites
• Having an infection in another part of the body that spreads

Risk factors

• Breaks in the skin, including cuts, burns, and ulcers
• Athlete's foot or other fungal skin infections
• Chronic swelling of the arm or leg (lymphedema)
• Diabetes, especially if blood sugar is not well controlled
• A weakened immune system from illness or medication
• Older age
• Obesity

When to see a doctor

See a doctor urgently if:

• If an area of skin becomes red, swollen, warm, and painful, especially if you also have a fever
• If the redness or pain is spreading quickly
• If you have a skin condition and develop flu-like symptoms along with a skin rash

Book a routine appointment if:

• If you have a cut or sore that isn't healing well or seems to be getting worse
• If you keep getting fungal infections like athlete's foot, which can lead to cellulitis
• If you have a weakened immune system and notice any skin changes

Diagnosis

A doctor usually diagnoses cellulitis by looking at your skin and feeling the area. They will ask about your symptoms and health history. In most cases, no special test is needed.

Tests that may be done

• Blood tests if the infection seems severe or has spread
• A swab of the area if there is a wound or blister
• Ultrasound or other imaging if the doctor needs to check for an abscess

What to expect at your appointment

The doctor will ask when the symptoms began and whether you have had any injuries. They may draw a line around the red area to see if it spreads. You might be prescribed medicine to take at home, or you may be referred to hospital for IV treatment in severe cases.

Treatment

Cellulitis is treated with antibiotics. The type, how you take them, and how long you need them depends on how serious the infection is and your overall health. It is important to follow your healthcare provider's instructions and finish the full course, even if your skin starts to look better.

Self-care at home

• Take all prescribed medicines exactly as directed by your doctor or nurse
• Keep the affected area clean and dry
• Elevate the affected limb when resting to help reduce swelling
• Use a cool, clean compress to ease discomfort
• Drink plenty of fluids and rest until you feel better
• Monitor the area for any signs that it is getting worse

Medical treatments

Antibiotics are the main treatment for cellulitis. These are given by mouth for mild to moderate cases, or through an IV (drip) in a hospital for more severe infections. Your doctor will decide the most suitable treatment for you. Pain relief and fever reducers may be suggested, but talk to your pharmacist or doctor about what is safe for you.

When is surgery considered?

Surgery is rarely needed for cellulitis. If a pocket of pus (an abscess) forms, it may need to be drained. In very rare cases, dead skin or tissue must be removed by a surgeon.

Living with this condition

While you are recovering, rest and take your medicine as prescribed. Keep an eye on the affected skin and note any new symptoms. A red area may stay slightly red for a few weeks after treatment, but the pain and swelling should improve. Keep your skin well moisturised to prevent cracks.

Lifestyle tips

• Wear protective footwear, especially outdoors or in places with sharp objects
• Treat athlete's foot or other fungal skin infections quickly
• Keep your nails trimmed and avoid scratching insect bites
• If your skin is dry, use a gentle moisturiser every day
• Manage health conditions such as diabetes alongside your healthcare team

Diet and exercise

During the infection, rest and let your body heal. After it improves, a balanced diet and regular physical activity can support your immune system and improve circulation. Staying active may also help prevent future infections by improving blood flow.

Mental health and emotional wellbeing

Living with cellulitis can be worrying, especially if it is painful, severe, or keeps coming back. It is normal to feel stressed, anxious, or low while you recover. Do not ignore these feelings—talk to your healthcare provider or someone you trust.

Prevention

Many cases of cellulitis can be prevented by keeping your skin healthy and treating any breaks or skin conditions promptly. Cleaning cuts with soap and water, using a protective dressing, and watching for signs of infection can all lower your risk.

Vaccines

There is no vaccine that directly prevents cellulitis. However, it is important to keep your routine vaccinations, such as tetanus, up to date. Ask your healthcare provider what vaccines you may need.

Screening programmes

There is no routine screening for cellulitis. If you have had cellulitis before, your doctor may talk with you about ways to prevent another episode and may check you regularly for skin problems.

Complications

If left untreated

• The infection can spread more deeply into the skin and muscle
• It can enter the bloodstream and cause sepsis, a life-threatening condition
• An abscess (pocket of pus) may form, which requires drainage
• Damage to the lymphatic system can cause long-term swelling (lymphedema)
• Cellulitis can return again and again, especially if the cause is not treated

Long-term outlook

With prompt and proper treatment, most people with cellulitis recover completely. It can take a few days to start feeling better, and the skin may take a few weeks to return to normal. Taking your medicine as prescribed and following up with your doctor gives you the best chance of a good recovery.

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