Final answer:
The topical antifungals commonly used for dermatophytes are the allylamines (e.g. terbinafine), imidazoles (e.g. miconazole, ketoconazole, clotrimazole), and griseofulvin.
Step-by-step explanation:
The topical antifungals commonly used for dermatophytes are the allylamines, imidazoles, and griseofulvin. The allylamines, such as terbinafine (marketed as Lamisil), inhibit an earlier step in ergosterol biosynthesis and are used topically for the treatment of dermatophytic skin infections like athlete's foot, ringworm, and jock itch. The imidazoles, including miconazole, ketoconazole, and clotrimazole, disrupt ergosterol biosynthesis and are used to treat fungal skin infections like ringworm and yeast infections such as vaginal candidiasis. Griseofulvin, a naturally produced antifungal, is used orally when other topical treatments are ineffective.