Hi-
How do you know that he doesn't have an inner ear infection?
He could have an outer ear infection. The most common reason for scratching at the ear is ear mites.
As for the small patch of hair loss which seems to you like it is itching, there are a couple of small skin tumors which can appear as small pink raised/smooth areas.
Topical medicines would be silver sulfadiazine. Do not use anything with neomyicin.
If the scratching persists, go to your vet and get it checked out.
I hope this information is helpful.
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Thanks!
Veterinarian
25+ yrs of Veterinary experience: medicine, surgery, nutrition; 40+ yrs.companion animal owner
The silver sulfadine can probably be purchased at a pet store, but certainly a vet should carry it. It is available without a prescription. Just place a small amount all over the affected area once or twice daily, usually for about 7-10 days. If that doesn't remedy the situation, you probably have a more serious problem which should be checked by a professional.
I hope this has helped.
Here's a link on Amazon.com. 1% silver sulfadizaine cream
It is a common remedy for burns. If you get it this way, you don't have to go to the vet.