What is Impetigo?

Impetigo, commonly known as yellow sore, refers to a common, contagious superficial skin infection. If discomfort symptoms occur, it is recommended to seek timely medical consultation at a hospital and receive standardized treatment under a physician's guidance. Detailed analysis is as follows:

Impetigo is mainly caused by infection with Staphylococcus aureus or hemolytic streptococcus and is more common in children, especially during summer and autumn or in hot, humid weather. Based on age at onset and infection characteristics, impetigo can be classified into bullous impetigo, non-bullous impetigo, and neonatal impetigo.

Among these, bullous impetigo is characterized by rapidly enlarging blisters. Initially, the blister fluid is clear and later becomes cloudy, with a half-moon shaped accumulation of pus inside the blister, and it is highly contagious. Non-bullous impetigo can occur on any part of the body but is commonly seen on exposed areas such as around the lips, nose, auricles, and limbs. It initially presents as red spots or small papules, which rapidly progress to pustules, followed by rupture, erosion, and formation of thick crusts. Itching may also accompany this type. Neonatal impetigo typically occurs 4–10 days after birth, with sudden onset of blisters of varying sizes on the face, trunk, and limbs. Patients should keep the affected area clean and dry to prevent bacterial growth. Treatment under a physician's guidance may include topical application of mupirocin ointment, fusidic acid cream, oral administration of roxithromycin capsules, and other medications.

Impetigo is contagious; therefore, patients should seek timely medical attention and follow medical advice for treatment and care to prevent complications. Additionally, attention should be paid to personal hygiene, maintaining clean and dry skin. Clothes, items, and living environments that have come into contact with the patient should be disinfected appropriately.