L01.03

Clinical Causes: Primarily caused by bacterial pathogens such as Staphylococcus aureus, including strains producing exfoliative toxins. Less commonly, by Streptococcus pyogenes bacteria. Transmission often occurs through direct contact with infected skin lesions or contaminated objects like towels, clothing, or bedding. Poor hygiene, skin trauma, or existing skin conditions can increase susceptibility to infection. Neonates and infants are at higher risk, especially if their immune defenses are still developing.

Key Symptoms: Large, fluid-filled blisters (bullae) that are often soft and fragile. The blisters may rupture, leaving a shallow, moist ulcer or erosion. Adjacent skin can become red, inflamed, and tender. In some cases, the affected area appears crusted or covered with a honey-colored or yellowish crust after blister rupture. Possible fever or malaise if the infection spreads or becomes more severe. The skin around the blisters may be itchy or uncomfortable.

Diagnosis Path: Diagnosis is primarily based on clinical examination of skin lesions. A healthcare provider may take a sample or swab of the blister fluid or crust for laboratory testing to identify the bacterial pathogen. This helps distinguish bullous impetigo from other skin conditions with similar appearances, such as other blistering diseases or skin infections. In some cases, additional tests may be conducted to evaluate for possible complications or underlying issues.

Treatment Protocols: Treatment usually involves topical or systemic antibiotics to eradicate the bacterial infection. For localized lesions, prescription-strength topical antibiotic ointments like mupirocin are often effective. In more widespread or severe cases, oral antibiotics may be necessary. Proper skin hygiene and keeping affected areas clean and dry are crucial. Disposing of contaminated clothes and towels and avoiding skin-to-skin contact with infected individuals can help prevent spread. Healthcare providers may also advise on managing discomfort and preventing scratching, which can worsen or spread the infection.