Antibiotic Treatment for Impetigo

A clinician may use a topical medicine for limited superficial infection and an oral medicine when lesions are numerous, spreading, blistering, difficult to treat locally, or associated with deeper infection. An examination is useful because eczema, cold sores, fungal infection, and other rashes can resemble impetigo.

Impetigo is a contagious bacterial infection of the upper skin. It often presents with fragile sores or blisters that break and leave yellow-golden crusts, commonly around the nose, mouth, or exposed limbs. Scratching can transfer bacteria to nearby skin, and close contact or shared personal items can pass the infection to others.

Broken skin from scratching, insect bites, or atopic dermatitis can provide an entry point for bacteria. A swab is not always needed, but it may help when infection keeps returning, looks unusual, or fails to improve with the initial plan.

Apply or take the prescribed antibiotic exactly as instructed. Gently wash affected skin, soften crusts only as advised, wash hands before and after touching the area, and keep fingernails short. Do not share towels, clothing, bedding, razors, or skin products. Cover weeping lesions with a clean, light dressing if the clinician recommends it.

Follow the clinician's advice about school, nursery, work, sport, and close physical contact because contagiousness depends on treatment and whether lesions can be contained. Launder items that touch the sores and avoid scratching. If doses are missed, consult the medicine instructions or a pharmacist rather than doubling a dose without advice.

Arrange prompt care if sores are spreading despite treatment, redness extends into surrounding skin, pain or swelling increases, pus collects deeply, fever develops, or the person becomes generally unwell. Lesions close to the eye, extensive blistering, repeated episodes, or infection in a newborn or someone with reduced immune defences also merit early assessment.

Call for urgent help if an antibiotic is followed by breathing difficulty, swelling of the face or tongue, faintness, widespread blisters, peeling, or sores involving the mouth or eyes. These are not routine features of impetigo and may indicate a severe medicine reaction.

Ask how the diagnosis was distinguished from eczema or another crusted rash, whether a topical or oral treatment fits the distribution, how to handle crusts and dressings, and what change would count as inadequate improvement. If impetigo returns, discuss skin conditions that cause scratching, hygiene around shared items, and whether a swab is appropriate.