Impetigo: Symptoms, Photos, AI Check 🚨 ICD-10: L01 | ICD-11: 1B72

Impetigo is a contagious bacterial skin infection that most commonly affects children, although it can also occur in adults. The condition presents with superficial rashes, blisters, and characteristic yellowish honey-colored crusts on the skin. The face, especially around the nose and mouth, as well as the hands and other exposed areas of the body, are most commonly affected.

Impetigo is caused by bacteria — most often staphylococci or streptococci. The infection spreads easily through close contact, hands, towels, toys, or other shared objects. Despite being highly contagious, the condition usually responds well to treatment and rarely leads to serious complications.

Symptoms may develop quickly — sometimes within just a few days. Without treatment, the lesions may enlarge and spread to other areas of the skin.

What to Do If You Suspect Impetigo

If blisters, oozing skin lesions, or characteristic crusts appear, it is important to consult a dermatologist or pediatrician if the symptoms occur in a child. A specialist can distinguish impetigo from other skin conditions and choose the appropriate treatment.

Before the consultation, it is advisable to:

• avoid touching or scratching the lesions;
• wash hands more frequently;
• use a separate towel;
• avoid close contact with other people;
• avoid popping the blisters yourself.

If the condition occurs in a child, it is important to limit contact with other children until the diagnosis is clarified and treatment has started.

Antibiotics or aggressive antiseptics should not be used without a doctor’s recommendation. Some products may irritate the skin or make evaluation of the condition more difficult.

What Impetigo Looks Like

Impetigo usually begins with small red spots or blisters on the skin. Over time, the blisters rupture, leading to oozing areas and characteristic dense yellow-golden crusts.

The most common locations are:

• the area around the nose and mouth;
• cheeks;
• chin;
• hands;
• legs;
• areas with damaged skin.

Sometimes the rash is accompanied by mild itching or burning. Some people develop isolated lesions, while others have multiple lesions that tend to spread.

There is also a form of impetigo with larger fluid-filled blisters. This type is more common in young children.

Below in the article, you can see real photos to better understand what the condition looks like.

Main Symptoms

The symptoms of impetigo are usually visually noticeable and develop fairly quickly.

The most common symptoms include:

• red spots or inflamed areas of skin;
• fluid-filled blisters;
• oozing lesions;
• yellowish or honey-colored crusts;
• itching;
• pain or skin tenderness.

General well-being usually remains normal, but in more widespread infections, weakness, fever, or enlarged lymph nodes may sometimes occur.

Causes of the Condition

Impetigo is caused by bacteria that enter the superficial layers of the skin. The most common pathogens are Staphylococcus aureus and Streptococcus pyogenes.

Bacteria can enter more easily through damaged skin. Triggering factors may include:

• abrasions and scratches;
• insect bites;
• scratching;
• eczema or atopic dermatitis;
• increased skin moisture;
• close contact with an infected person.

The risk of infection increases in schools, sports clubs, and places where people are in close contact with one another.

How the Condition Develops

After bacteria enter the skin, a superficial inflammatory reaction develops. In response to the infection, the skin becomes red, blisters form, and inflammatory fluid is released.

The blisters rupture quickly, after which moist erosions and characteristic crusts develop. If a person touches or scratches the lesions, bacteria may spread to nearby areas of skin, causing new rashes to appear.

Sometimes the infection develops on top of an existing skin condition when the skin barrier is already impaired.

Forms and Types

Non-Bullous Impetigo

The most common form. Characterized by small blisters and honey-colored crusts.

Bullous Impetigo

This form presents with larger fluid-filled blisters. It is more common in young children.

Ecthyma

A deeper form of infection in which inflammation affects not only the superficial layer of the skin. Ulcers and scars may develop.

When to See a Doctor

A doctor’s consultation is necessary in the following situations:

• the rash is spreading rapidly;
• painful blisters or oozing lesions appear;
• fever develops;
• the condition occurs in a young child;
• the lesions do not heal or become larger;
• signs of severe inflammation appear;
• the condition recurs frequently.

It is especially important not to delay seeking medical attention in the presence of chronic skin diseases or a weakened immune system.

Treatment

Treatment of impetigo is aimed at eliminating the bacterial infection and preventing its spread.

Depending on the severity of the condition, a doctor may recommend:

• gentle skin cleansing;
• antiseptic skin care;
• topical antibacterial medications;
• systemic antibiotics for widespread infection;
• temporary limitation of close contact with others.

During treatment, it is important to maintain proper hygiene: wash hands regularly, change towels and bed linens, and avoid scratching the affected areas of skin.

Most cases of impetigo respond well to therapy. With proper treatment, symptoms usually improve fairly quickly.

Questions and Answers

Is impetigo contagious?

Yes. Impetigo is considered a contagious skin infection and may spread through direct contact or shared objects.

Can impetigo be completely cured?

Yes, in most cases the condition is successfully treated. It is important to follow the doctor’s recommendations and complete the full course of treatment.

Does impetigo leave scars?

With superficial forms, scars usually do not remain. However, with deeper inflammation or severe scratching, marks or changes in pigmentation may occur.

Can children attend school or daycare with impetigo?

It is usually recommended to temporarily avoid attending group settings until treatment has started and the risk of spreading the infection has decreased.

Is impetigo dangerous?

In most cases, the condition is mild, but without treatment the infection may spread and lead to complications.

Can the rash be treated with alcohol or iodine?

Aggressive products may irritate the skin. Appropriate skin care is best selected together with a doctor.

Why does impetigo recur?

Repeated episodes may occur due to close contact with a source of infection, chronic skin damage, or impairment of the skin barrier.

Can an adult catch impetigo from a child?

Yes. Impetigo can occur at any age, especially with close household contact.

Medical Literature and Authoritative Sources

• American Academy of Dermatology (AAD)
• World Health Organization (WHO)
• Fitzpatrick’s Dermatology, 9th Edition
• Andrews’ Diseases of the Skin: Clinical Dermatology
• European Society for Dermatological Research
• National Health Service (NHS)
• Infectious Diseases Society of America (IDSA)

Photos of Impetigo: