AI Summary Overview
Cellulitis Symptoms That Should Not Be Ignored
Certain symptoms suggest that the cellulitis infection may be spreading or becoming more severe. These symptoms require prompt medical assessment. Check out cellulitis symptoms that should not be ignored:
| Symptoms | What It May Indicate |
| Redness or discolouration that is rapidly spreading | The skin infection may be progressing and requires prompt assessment |
| Increasing swelling, warmth or tenderness | Worsening local inflammation and infection |
| Fever, chills or shivering | The infection may be causing a systemic response |
| Severe or rapidly worsening pain | Possible deeper tissue involvement or a more serious infection |
| Blisters, purple patches or skin breakdown | More extensive inflammation or tissue damage |
| Swollen, painful lymph nodes | The immune system is responding to infection in the nearby tissues |
| Confusion, extreme weakness or feeling severely unwell | Possible serious systemic infection, including sepsis |
| Cellulitis affecting the face, particularly around the eye | Potential involvement of deeper tissues around the eye, requiring urgent assessment |
Symptoms that worsen rapidly, spread beyond the original area or fail to improve after two to three days require reassessment by a doctor.
Why Do Cellulitis Symptoms Occur?
Cellulitis occur when bacteria enter the skin through a break in the skin barrier and infect the deeper layers of the skin and underlying tissues. Bacteria such as Streptococcus and Staphylococcus are common causes. The entry point may be a cut, scrape, burn, insect bite, surgical wound or another injury, although the break in the skin can sometimes be too small to notice.
Once bacteria enter the tissues, the body's immune system responds to the infection, triggering inflammation. This inflammatory response increases blood flow and causes fluid to build up in the affected area, leading to typical symptoms such as redness or skin discolouration, warmth, swelling, pain and tenderness.
Cellulitis infection may also cause the nearby lymph nodes to become swollen and tender as the immune system works to fight the bacteria. If the infection spreads, it can cause fever, chills and a general feeling of being unwell. In more serious cases, bacteria can enter the bloodstream and potentially lead to severe complications.
Cellulitis Symptoms That Require Immediate Medical Attention
People should get urgent medical attention if cellulitis symptoms are accompanied by any of the following:
-
Confusion, unusual drowsiness or difficulty staying awake
-
Fainting, severe dizziness or extreme weakness
-
Rapid breathing or difficulty breathing
-
Severe pain that is much worse than the visible skin changes
-
Rapidly spreading swelling or discolouration with high fever
-
Purple, grey or black skin, blood-filled blisters or tissue breakdown
-
Severe loss of movement in a nearby joint or limb
-
Pain when moving the eye
-
Blurred, reduced or double vision
-
An eye that appears to bulge forward
Symptoms of Cellulitis Based on Type
Cellulitis do not have types, but it is segregated based on the different parts of the body it can develop in. Symptoms of cellulitis may vary depending on the affected area. The following table summarises common cellulitis symptoms based on the body location:
| Body Location | Common Symptoms |
| Lower legs | Redness or skin discolouration, warmth, swelling, pain and tenderness. The affected area may gradually spread. |
| Feet and toes | Swelling, warmth, pain and tenderness. Cellulitis may occur through breaks in the skin, including those associated with fungal infections such as athlete's foot. |
| Hands and fingers | Painful swelling, warmth and skin discolouration. Movement may become uncomfortable due to swelling and tenderness. |
| Face | Swelling, warmth, tenderness and skin discolouration. Facial cellulitis requires prompt medical assessment because infection can potentially spread to deeper tissues. |
| Around the eye (periorbital area) | Swelling and redness or discolouration around the eyelid and surrounding skin. Pain with eye movement, vision changes or a bulging eye may suggest a more serious infection and require urgent medical attention. |
Symptoms of Cellulitis in Children
Children can develop cellulitis at any age. Its symptoms are generally similar to those seen in adults, such as affected skin suddenly becoming red or discoloured, hot, swollen, painful and tender.
Children may also experience the following symptoms:
-
Fever
-
Chills or shivering
-
Feeling generally unwell
-
Swollen and painful lymph nodes
-
Blisters or fluid-filled areas on the skin
-
Increasing pain or swelling
-
Reduced movement when an affected limb or joint becomes painful
Can You Have Cellulitis Without Symptoms?
Cellulitis usually causes noticeable symptoms because the infection triggers inflammation in the affected tissues. The most common early changes are warmth, swelling, pain, tenderness and skin discolouration.
However, the initial break in the skin that allows bacteria to enter may be so small that it cannot be seen. This means a person may not remember having a cut, scratch, bite or other injury before cellulitis develops.
Some people may also have less obvious skin colour changes, particularly on brown or black skin. In these situations, warmth, swelling, tenderness and changes in skin texture may be more noticeable than redness.
When Can Cellulitis Symptoms Become Life-Threatening?
Cellulitis can become life-threatening when the infection spreads rapidly or moves into deeper tissues or the bloodstream. A brief overview of life-threatening symptoms and what can happen in such situations is given in the table below:
| Emergency Complication | What Can Happen |
| Sepsis | The body develops a severe response to infection, causing confusion, rapid breathing, extreme weakness, dizziness or loss of consciousness. |
| Necrotising Fasciitis | Infection spreads rapidly through the deeper tissue surrounding muscles, causing severe pain, swelling, blisters and purple, grey or black skin. |
| Orbital Cellulitis | Infection spreads behind or around the eye, causing painful eye movement, reduced vision, double vision or a bulging eye. |
| Bone Infection | Infection reaches a nearby bone, causing deep pain, fever, swelling and difficulty using the affected limb. |
| Septic Arthritis | Infection affects a nearby joint, causing severe pain, swelling and an inability to move the joint normally. |
How are Cellulitis Symptoms Diagnosed?
Cellulitis is usually diagnosed based on symptoms and physical examination rather than a single specific test. The following table shows different ways of diagnosing cellulitis and its purpose:
| Diagnostic Assessment | Purpose |
| Physical Examination | Checks the skin for warmth, swelling, tenderness, pain and spreading discolouration. |
| Medical History | Identifies recent wounds, bites, skin conditions, previous cellulitis and other risk factors. |
| Examination of Nearby Lymph Nodes | Checks for swelling or tenderness associated with the infection |
| Blood Tests | May be used when the person appears systemically unwell or a more serious infection is suspected |
| Wound or Fluid Culture | May be considered when there is pus, drainage or another source from which bacteria can be sampled |
| Imaging Scans | May be used when a deeper infection, abscess or another condition is suspected rather than uncomplicated cellulitis |
FAQs
-
Q1. What is the first symptom of cellulitis?
Ans: The first noticeable symptom of cellulitis is often an area of the skin that becomes painful, warm, swollen and red or discoloured. The affected area may then gradually become larger or more tender. -
Q2. Can cellulitis develop without a visible cut?
Ans: Yes. Bacteria causing cellulitis often enter through a small break in the skin that may be too minor to notice. Therefore, you may develop cellulitis without noticing a specific injury or wound. -
Q3. Which cellulitis symptoms should never be ignored?
Ans: Rapidly spreading skin changes, increasing swelling, severe pain, high fever, chills, confusion, breathing difficulties and cellulitis symptoms around the eye should be assessed promptly. These may indicate a more serious infection or complication.
-
References
-
https://www.ncbi.nlm.nih.gov/books/NBK549770/
-
https://www.ncbi.nlm.nih.gov/books/NBK549770/
-
