Cellulitis: Causes, Symptoms, and When to Seek Medical Advice Online
- Amit Goyal
- 4 days ago
- 4 min read
At mySkinDoc, we understand that skin infections like cellulitis can be worrying, painful, and sometimes serious. If you're experiencing redness, swelling, or pain in your skin, it’s important to act quickly. The good news is that cellulitis can be effectively treated, especially when diagnosed early. In this article, we’ll explain what cellulitis is, its symptoms, causes, and how we at mySkinDoc can help you get the treatment you need fast, through our online dermatology service.
What is Cellulitis?
Cellulitis is a common bacterial skin infection that affects the deeper layers of the skin, including the dermis and subcutaneous tissue. It typically develops when bacteria enter the skin through a break—such as a cut, insect bite, eczema flare, surgical wound, or even dry, cracked skin.
Most cases are caused by Streptococcus or Staphylococcus aureus bacteria. While cellulitis can occur anywhere on the body, it most often affects the lower legs.
Common Signs and Symptoms of Cellulitis
The early signs of cellulitis can resemble other skin conditions, but there are key features to look out for. Symptoms may include:
Redness or inflammation that spreads
Swelling of the affected area
Warmth over the red area
Pain or tenderness to touch
Fever, chills, or feeling unwell (in more severe cases)
Blistering or pus in advanced infections
Cellulitis tends to develop quickly, within hours to a day, so it’s important to seek medical attention early if you notice any of the above signs.
What Causes Cellulitis?
The bacteria responsible for cellulitis usually enter through a break in the skin. This break might be visible (like a cut or graze) or microscopic (from dry, cracked skin). Common risk factors include:
Skin injuries (cuts, insect bites, grazes)
Skin conditions like eczema or athlete’s foot
Surgical wounds
Chronic swelling (lymphedema) in the legs
Diabetes, which affects immune response and wound healing
Poor circulation or varicose veins
Weakened immune system
Is Cellulitis Contagious?
No, cellulitis is not contagious. It cannot be passed from person to person. However, the bacteria that cause cellulitis can spread on the skin, especially in people with open wounds or weakened skin barriers.
Why Early Diagnosis is Key
If left untreated, cellulitis can spread quickly through the body, potentially leading to:
Abscess formation
Blood infection (sepsis)
Infection of deeper tissues or the lymphatic system
That’s why early diagnosis and prompt treatment are essential. Most cases can be successfully treated with a course of oral antibiotics if caught in time.
How is Cellulitis Diagnosed?
At mySkinDoc, our team of UK-trained dermatology experts can assess suspected cellulitis through secure online or video consultations. We will review your symptoms, examine photographs of the affected area, and ask about your medical history.
If you have signs of a skin infection, we can:
Confirm whether it’s cellulitis or another condition (e.g., allergic reaction, eczema, DVT, or erysipelas)
Prescribe oral antibiotics when appropriate
Advise when further in-person care or hospital attention is needed
What is the Treatment for Cellulitis?
The main treatment for cellulitis is a course of antibiotics, usually taken orally for 7 to 10 days. In severe cases or if oral antibiotics are not effective, intravenous antibiotics may be required in a hospital setting.
Other supportive treatments may include:
Pain relief (paracetamol or ibuprofen)
Elevation of the affected limb to reduce swelling
Hydration and rest
Wound care if there is a visible entry point
How Can mySkinDoc Help?
At mySkinDoc, we offer fast, professional online dermatology consultations for anyone concerned about a skin infection. If you think you might have cellulitis, you don’t need to wait for a GP appointment or go to A&E unless it’s an emergency.
We can:
Review your case within 24 hours
Provide an accurate diagnosis
Prescribe antibiotics remotely, when clinically appropriate
Advise on red flag symptoms that require hospital attention
Offer ongoing support and follow-up reviews
Many of our patients find that online diagnosis for cellulitis is fast, safe, and effective, especially when combined with clear photographs of the affected skin.
When to Seek Urgent Medical Attention
You should seek emergency medical help (A&E or 111) if:
You have a high fever, vomiting, or feel very unwell
The redness is spreading rapidly
There is numbness, tingling, or severe pain
You develop blistering or blackened skin
The infection is near the eyes or on the face
You have a known condition that affects your immune system
At mySkinDoc, we will advise if your condition is suitable for remote management or if you need in-person care.
Preventing Cellulitis
To reduce your risk of cellulitis, especially if you’ve had it before:
Keep skin clean and moisturised
Treat conditions like athlete’s foot or eczema promptly
Wear protective clothing when gardening or working outdoors
Manage diabetes and circulation problems
Check your feet regularly, particularly if you have diabetes
If you’ve had recurrent cellulitis, your GP may discuss preventative antibiotics.
FAQs About Cellulitis
Q: Can cellulitis go away on its own?
A: No, cellulitis typically requires antibiotics to clear the infection. Without treatment, it can worsen and spread.
Q: How long does cellulitis take to heal?
A: Most people improve within 2 to 3 days of starting antibiotics. Full recovery usually takes about 7 to 10 days, but skin discolouration can last longer.
Q: Can I exercise with cellulitis?
A: It's best to rest the affected area, especially if your leg is involved. Elevation can help reduce swelling.
Q: What should I do if the redness comes back?
A: Recurrent cellulitis is not uncommon. If it returns, contact us at mySkinDoc for a review and possible longer treatment.
Think You Might Have Cellulitis? We’re Here to Help
If you're worried about a possible skin infection, don’t delay. At mySkinDoc, we offer expert online dermatology consultations with fast turnaround, so you can start treatment as soon as possible.
Upload your photos, fill out a short medical history form, and receive a consultation within 24 hours—all from the comfort of your home.
Don’t wait—early treatment is the key to fast recovery.
👉 Visit www.myskindoc.co.uk to book your online skin consultation today.
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