Ecthyma is a skin infection similar to impetigo, but more deeply invasive. Usually caused by a streptococcus infection, ecthyma goes through the outer layer (epidermis) to the deeper layer (dermis) of skin, possibly causing scars.
Treatment depends on the extent and severity of infection. A topical antibiotic ointment such as fucidic acid or mupirocin is often prescribed for localised ecthyma. A topical antiseptic such as povidone iodine, antibacterial soap or Crystacide (hydrogen peroxide) cream may be used instead. Tell your friend to apply it at least three times a day to the affected areas and surrounding skin. If her skin condition doesn't improve, she should consult a dermatologist.
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