Impetigo is a common bacterial skin infection that affects the superficial layers of the skin and is especially frequent in children. Because it spreads easily through close contact, it often appears in families, schools, and childcare environments. The infection develops when bacteria enter the skin through minor damage such as scratches, insect bites, eczema, or small cuts.
The two main bacteria responsible are Staphylococcus aureus and Streptococcus pyogenes. Once they enter the skin, they multiply quickly and cause visible sores. Although impetigo is usually mild and responds well to treatment, it is highly contagious and should be managed early to prevent spread.
Symptoms
Impetigo usually starts with small red spots or fragile blisters that quickly burst. After breaking, they leave moist areas covered by a yellow, golden, or brown crust. These crusts are one of the most typical signs of the infection.
The lesions may remain small or enlarge and spread to nearby skin. In some children, several blisters merge and form larger fluid-filled lesions, known as
bullous impetigo
.
Common symptoms include:
• red sores or blisters
• honey-colored crusts
• itching
• mild pain or irritation
• spreading patches of skin lesions
The face, especially around the nose and mouth, is commonly affected, but lesions may also appear on the arms, legs, or other exposed areas. In more extensive infections, mild fever or enlarged lymph nodes may occur.
Causes
Impetigo occurs when bacteria enter damaged skin. Even minor skin irritation can be enough to allow infection to develop.
Common risk factors include:
• eczema
• insect bites
• scratching
• minor cuts
• scabies
• head lice
The infection spreads easily through direct contact with sores or through contaminated objects such as towels, clothing, bedding, or toys. Warm weather and crowded environments increase the chance of transmission.
Treatment
Treatment depends on how widespread the infection is. Mild cases are usually treated with antibiotic creams or ointments, while more extensive cases may require oral antibiotics.
Before applying medication, the affected skin should be cleaned gently. Crusts can be softened with warm water or saline to help treatment work better.
To reduce spread:
• wash hands frequently
• avoid scratching the lesions
• keep fingernails short
• use separate towels and bedding
• cover sores when needed
It is important to complete the full course of treatment even if the skin improves quickly.
Conclusion