Infected eczema

When eczema becomes secondarily infected (impetiginized), it is frequently mistaken for impetigo, especially on the face. However impetigo starts as blisters which break, form crusts and respond to appropriate antibiotics whilst infected eczema requires topical steroids as well as antibiotics.
Eczema is readily colonized by bacteria, particularly Staphylococcus aureus. This is due to impaired immunological responses in atopics and to disordered epidermal barrier function. Yellow crusting and purulent fluid becomes apparent.