Ringworm is not a worm, and your dog did not get shots to prevent it. It is also not the same as heat rash. It is a superficial fungal infection of the skin. The Lamisil suggestion is fine, if it is ringworm, which I doubt.

I suspect the dog is expressing an allergic reaction to something. Often they will be allergic to a particular grass or something. Ears and paws are commonly the primary areas for them to have their allergic reactions.

Discuss possible allergy treatment with your vet. If he is not willing to at least tell you why this is NOT an allergy...get a new vet.

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