How to Treat Congenital Preauricular Fistula Abscess

My son is 18 years old and has congenital preauricular fistula abscess. He received only drainage and anti-inflammatory treatment at the county hospital without any cleaning. The inflammation lasted for about 20 days, and I’m worried about potential liver and kidney damage. He is now receiving treatment at a provincial children’s hospital, where the doctor has performed drug implantation therapy and instructed regular medication changes, with surgery scheduled after the inflammation subsides. I’m wondering if this treatment will harm the liver and kidneys? What is the specific treatment method?
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