Why is my indoor cat scratching his ears, causing bald spots and cuts?

I am sorry to hear about your kitty! If her ears have been checked by a vet to ensure there is no infection I would be suspicious she could have an allergy, either to a food ingredient https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4951526 (most often a protein source and not grain as so many pet food commercials would have you believe) or an allergy to something in the environment like pollen/dust/etc. https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952664 . I would recommend bringing Chessie into the vet for an examination. This often requires at least a short course of medication to get the itching under control, such as a steroid, Atopica (cyclosporine) or Apoquel. The vet can discuss if a diet trial with a hypoallergenic diet is recommended and help you decide on the best diet for Chessie to try.

The most common reasons that cats scratch at their ears are infections or infestations with ear mites. Ear mites can be treated by several different medications, some of which are over the counter and others that are prescription only. If there is an infection, an antimicrobial flush plus cleaning would be needed to clear up the affected ear. Steroids might also be warranted to assist with some of the inflammation and discomfort associated with the infection. Keep the e-collar on for the time being until you have resolved the problem. Sparrow will only make it worse as soon as you remove it, as you have already noted.

Yes, he may have ear mites or ear canal infection. Cats with ear mites or ear infection usually scratch the ears a lot and they get the bald patches as a result of scratching. The ears should be examined by a vet and then decided what treatment Maru needs. Usually, the treatment is in form of ear drops, that are effective against all type of infections and against mites at the same time.

Thanks for using Petco Pet Education Center, formerly Petcoach! This is likely due to allergies. Benadryl is good as is prednisolone for example. However, these are only going to help with the itch temporarily. However, it is crucial to get rid of the allergic component and treat the allergy as if not, the itch will continue. Also, it is crucial to treat the likely secondary infection. There is no at home treatments as the other medication that can be used in cats for this is a prescription medication called prednisolone. One thing you can do at home besides dealing with the possible allergies is using an e-collar which you can get from your local pet store or online to prevent any further self-trauma. It really comes down to figuring out what is causing his allergies so that they can be treated or the specific allergen avoided. There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies. Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market). If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests. Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!

This is probably due to a severe allergy, although it could also be fleas or mites.

 First of all, in order to rule out skin parasites, high quality flea treatment is given. It sounded like your veterinarian has done it already. The next step is to treat the allergy symptomatically and try discovering the cause of the allergy.

 Food can be indeed one the most common cause of it. Some medications can be given by the vet in order to stop the chewing and repair the skin lesions (steroids and antibiotics usually). 

There is also a nice topical spray available, it's called Cortavance and you can get it at the vets.

 Hopefully you will see some results after all this, if not you and your vet should consider starting on a long term allergy treatment.

Tyga could be suffering from allergies causing her to itch, or she could have an ear infection causing her to scratch at her ear. An ear infection can be caused by bacteria or yeast in addition to ear mites, so I would recommend having her seen by a vet tomorrow. The vet can diagnose what is causing her to scratch a lot, and can treat her for it.

With itching in the face I would be worried about parasites or a food allergy. You can try changing to different formula if fiodbthat contains a different protein source or a hypoallergenic diet. There a promising allergy medicine called Apoquel that can be helpful in cats now. You can apply cortisone cream to the red area until you can talk to your vet about the new options