PLE-3680

A 35-year-old woman comes in with an inflamed, itchy, expanding cutaneous lesion on her side. She suspects she might have picked it up from her dog because it is where the dog sleeps next to her and the dog is losing fur. (The dog also needs to be treated by the vet.) You treat the woman with a topical drug from one of the major drug families commonly used to treat the infection. What is the mechanism of action of that drug class?