AI Summary Overview
Impetigo Symptoms That Should Not Be Ignored
Some impetigo symptoms may indicate that the infection is spreading, becoming more severe, and require further medical evaluation. The table below explains impetigo symptoms that should not be ignored and what they may suggest:
| Symptom | What It May Indicate |
| Sores or blisters spreading to other areas | The infection may be spreading through scratching, touching, or contact with infected fluid |
| Increasing redness, swelling, or warmth around sores | May suggest worsening skin inflammation or a deeper skin infection |
| Large fluid-filled blisters | May be associated with bullous impetigo, a type that causes larger blisters |
| Thick crusts that continue to spread | May indicate an active infection affecting a larger skin area |
| Sores that do not improve or heal | May require further evaluation to confirm the diagnosis or check for another infection |
| Repeated episodes of impetigo | May require assessment to identify possible sources of recurring infection |
| Fever or feeling generally unwell | May suggest that the infection is becoming more extensive |
Although impetigo is usually limited to the surface layers of the skin, symptoms that worsen or spread should be evaluated by a healthcare professional. Similar symptoms can also occur with other skin conditions, including eczema, cold sores, and chickenpox.
Why Do Impetigo Symptoms Occur?
Impetigo occur when bacteria infect the outer layers of the skin. The infection is commonly caused by bacteria such as Staphylococcus aureus and sometimes Streptococcus pyogenes. These bacteria can enter the skin through small cuts, scratches, insect bites, irritated skin, or areas affected by conditions such as eczema.
When bacteria multiply on the skin, the body’s immune response causes local inflammation. This can lead to redness, irritation, itching, and the formation of sores or blisters. When these blisters break, the fluid dries and forms the typical golden-brown crust associated with impetigo.
Impetigo Symptoms That Require Immediate Medical Attention
You must seek medical advice as soon as possible if the following impetigo symptoms appear:
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Rapidly spreading redness, swelling, or pain around the affected skin
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Severe skin pain or pain that becomes worse quickly
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High fever with weakness or feeling seriously unwell
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Confusion, unusual sleepiness, or difficulty waking up
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Signs of a serious infection, such as extreme weakness or a very rapid heartbeat
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Rapid spread of infection in a newborn baby or a person with a weakened immune system
These symptoms may indicate a more serious infection that needs medical assessment. Early evaluation can help prevent complications and reduce the risk of the infection spreading further.
Symptoms of Impetigo Based on Type
Impetigo has different clinical types, and symptoms may vary by type. The table below explains the common symptoms associated with different types of impetigo:
| Type | Symptoms |
| Non-bullous impetigo | Small red sores that quickly break open and develop golden-brown crusts, usually around the nose, mouth, or hands. It may also cause itching, mild pain, or tenderness. |
| Bullous impetigo | Larger fluid-filled blisters that may rupture and leave moist areas with yellow or brown crusts. The affected area may feel itchy or uncomfortable. |
Non-bullous impetigo is the more common form. Bullous impetigo usually causes larger blisters due to bacterial toxins that affect the skin.
Symptoms of Impetigo-Specific Conditions
Some forms of impetigo may develop into deeper or more specific skin conditions. The table below explains the symptoms of a recognised impetigo-related condition:
| Condition | Symptoms |
| Ecthyma | Deeper sores that develop into ulcers and become covered with thick crusts. It commonly affects the legs but may occur on other parts of the body. |
Ecthyma affects deeper layers of the skin compared with typical impetigo and may require medical evaluation.
Symptoms of Impetigo in Children
Common impetigo symptoms in children include:
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Red sores around the nose and mouth
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Small blisters that break and form golden-brown crusts
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Itching around the affected skin
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Sores spreading to other parts of the body
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Pain or tenderness near the sores
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Larger blisters in cases of bullous impetigo
The redness caused by impetigo may be less noticeable on brown or black skin. Parents should seek medical advice if impetigo symptoms worsen, spread quickly, occur in a very young child, or affect a child with a weakened immune system.
Can You Have Impetigo Without Symptoms?
Impetigo is a symptomatic condition and does not occur without visible symptoms. Hence, it is not possible to have impetigo without symptoms.
When Can Impetigo Symptoms Become Life-Threatening?
Impetigo is not usually considered a life-threatening condition. However, in rare cases, the bacteria responsible for impetigo may spread beyond the skin and cause more serious complications. The table below explains some rare but serious conditions associated with severe impetigo infection:
| Emergency Condition | Why It Is Serious |
| Invasive bacterial infection | Bacteria may spread into deeper tissues or the bloodstream, causing a more widespread infection. |
| Sepsis | A severe response to infection that can affect blood circulation and the function of vital organs. |
| Severe cellulitis | Infection may spread into deeper layers of the skin and surrounding tissues, causing significant inflammation. |
| Post-streptococcal glomerulonephritis | An immune reaction after certain streptococcal infections that may affect kidney function and cause symptoms such as swelling or blood in urine. |
These complications of impetigo are uncommon. However, rapidly spreading infection, severe pain, high fever, confusion, breathing difficulty, or extreme weakness should be assessed by a doctor.
How are Impetigo Symptoms Diagnosed?
The table below explains the common methods used to assess impetigo symptoms:
| Diagnostic Test | Purpose |
| Medical history | Reviews when symptoms started, how they have changed, and whether there is a history of previous infections. |
| Skin examination | Evaluates the appearance, location, and spread of sores, blisters, and crusts. |
| Skin swab | Helps identify bacteria from the affected skin, especially in recurring cases or when further confirmation is needed. |
| Nasal swab | May be used in some recurring cases to check for bacteria present in the nose. |
A healthcare professional may also consider other skin conditions with similar symptoms before confirming impetigo.
Frequently Asked Questions (FAQs)
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Q1. What is usually the first symptom of impetigo?
Ans: The first symptom of impetigo is often the appearance of small red sores or blisters on the skin. -
Q2. Can impetigo develop without noticeable symptoms?
Ans: Impetigo usually causes noticeable skin symptoms, such as sores, blisters, or crusting. -
Q3. Which impetigo symptoms should never be ignored?
Ans: Impetigo symptoms, such as rapidly spreading sores, increasing pain, swelling, fever, or signs of feeling seriously unwell, should not be ignored. These symptoms may require medical evaluation to check whether the infection is worsening.
