What should you know about impetigo contagiosa?

The infection may start in a small cut, scratch, bite, or irritated patch. Blisters or shallow sores can break, then leave a characteristic yellow-brown crust. Touching the fluid and then touching another person or another part of the body can transfer infection. Towels, pillowcases, clothing, razors, and cosmetics may also carry material from a sore. A crust is a sign to notice, not a diagnosis; [Crusting Skin](/symptoms/skin-crusting/) covers other causes as well.

Arrange medical advice for a suspected case. Cover sores when practical, wash hands frequently, avoid scratching, and keep fingernails short. Use separate towels and face cloths, do not share personal-care items, and wash fabrics that touch the affected skin. Keep close contact limited while sores are active and follow local clinical advice about school, work, or childcare. A clinician may recommend [Topical Antibiotic Therapy](/treatments/medical-dermatology/topical-antibiotic-therapy/) or [Antibiotics For Skin Infection](/treatments/medical-dermatology/antibiotic-therapy-for-skin-infection/).

Seek prompt care if lesions are spreading, painful, swollen, or near the eye. Get urgent help for rapidly increasing facial swelling, fever with worsening skin changes, trouble opening the eye, or feeling seriously unwell. Children, older adults, and people with reduced immune defenses may need especially timely advice.

How can I protect people at home while this heals? Which items need washing or replacement? When is close contact safe, and what signs would mean the infection is worsening?