Instructions
Consider recent changes to your cat's diet or environment. Have you changed your cat's food or shampoo? Have you started using a new detergent that your cat might be exposed to? Some products could trigger an allergic reaction in a cat's fur or skin.
Monitor your cat to determine if your cat has been scratching the area near the ears, or if the bald spot is the result of it scrapping with another cat. (If your cat is an outdoor cat, consider bringing him in for a period of time for observation.) If the problem appears to be behavioral, see if there are any obvious new stresses in the cat's life that could be causing compulsive behavior.
Take your cat to a vet. Your cat might have ear mites, fleas, or even ringworms, which require specific treatments prescribed by a vet. These issues can be hard for the layman to diagnose; for example, ear mites are hard to see. Other causes for bare patches on a cat's skin include hormonal issues or circulation disorders, all of which will require veterinary expertise to detect and diagnose.
How to Get Rid of Bald Spots Beside Cat Ears
Hair loss in cats makes way for new hair growth. However, if the hair loss continually occurs in clumps, there could be a larger issue at hand. If you're regularly grooming your cat and it develops a bald spot in a specific place, such behind the ear, you probably will need to consult with a vet.