How long does it generally take for a dog’s ringworm to heal?

Dog ringworm is mainly from fungal infection and generally needs 1 to 2 months, with the time depending on severity and care. Treat it promptly with antifungal medicine or, if severe, at a vet, or the infection worsens and lengthens treatment. Note ringworm can spread to humans, so wear gloves when applying medicine to avoid direct skin contact.