How do I treat a dog that keeps scratching its ears?

Constant ear scratching can come from ear mites, otitis, parasites, or skin disease like mange or eczema. Check the ears; if waxy, clean with pet ear solution and treat mites.

If the canal is red, inflamed, or pus-filled, it is likely otitis – clean and apply antibiotic ointment.

If ears look clean, check surrounding skin for hair loss or scabs and get a skin scrape at a vet.