What should you know about antibiotics for ecthyma?

Antibiotics for ecthyma are prescribed to treat bacterial infection, with the choice and route guided by the sore's severity, extent, and your health. A clinician may also clean the area and assess whether infection has spread into surrounding skin.

Ecthyma often begins as a small blister or pustule and develops into a crusted ulcer. It can be painful or tender, and nearby skin may become red or swollen. Scratching, insect bites, eczema, poor circulation, or an existing skin injury can make infection more likely, but the appearance alone cannot identify the exact bacteria.

Treatment may involve a medicine applied to the skin, tablets, or a different approach when infection is extensive or severe. [Cellulitis](/conditions/cellulitis/) is a related spreading skin infection that needs medical assessment.

Take or apply the prescribed antibiotic exactly as directed and do not use leftover medicine or share it with another person. Wash hands before and after touching the area, keep the sore covered with a clean dressing, and avoid picking the crust. Do not stop early unless the prescriber tells you to, even if the skin starts looking better.

Tell the clinician about medicine allergies, pregnancy, immune problems, and treatments you already use. Keep towels, razors, and clothing separate until the sore has healed and wash them regularly.

Seek prompt medical care if redness spreads, pain or swelling increases, pus collects, fever develops, or the sore is near the eye. Urgent help is needed for confusion, severe weakness, rapidly worsening skin changes, or difficulty breathing. Children, older adults, and people with diabetes or reduced immunity may need earlier review.

Ask whether the sore is ecthyma, which treatment form is appropriate, how to dress it, and what improvement should look like. Ask what to do if a dose is missed or a rash develops, and whether another infection such as [Conjunctivitis](/conditions/conjunctivitis/) or [Acute Bronchitis](/conditions/acute-bronchitis/) changes the treatment plan.