Why does my senior indoor cat have a bald spot on her side?

Risia could be overgrooming, and that can occur due to stress, fleas, mites, allergies, or a medical illness like hyperthyroidism. I'd have her seen by a vet on Monday for a health check and a geriatric blood panel and urinalysis. Once a cause is found, the vet can discuss treatment options. I hope this helps!

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Cookie and for providing pictures, they are very helpful. She is beautiful. Yes, this is quite concerning. This can be a sign of a medical issue like hyperthyroidism, fleas, allergies, or severe stress. You should have her seen by a vet for this, and I recommend getting a geriatric blood panel and urinalysis done. Not only will that check for hyperthyroidism, but it will also check as to how her organs are functioning. I would see if you can take her into a vet tomorrow. I hope this helps!

If he seems to be losing weight, I would make sure her thyroid level was tested. If so, the skin could be due to an allergy or other skin condition. Thyroid level being high can cause skin and hair changes so I would first get this level checked out. As for the skin, you can use Douxo PS calm shampoo and mousse, both of which can be found online quite easily. I hope this helps guide you in the right direction! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

This can be a sign of a medical disease such as hyperthyroidism, which can be common in senior cats. I'd have Sweetie seen by a vet for this behavior. The vet can do a physical exam, geriatric blood panel, and urinalysis. I'd take him into a vet today if possible. Best of luck.

Older cats like your kitty often get an overactive thyroid which will show weight loss, a really fast heart rate, sometimes vomiting, and more vocalisation than usual. Some cats get skittish as well. Hyperthyroidism can actually cause heart problems and mask kidney disease. Hyperthyroidism is easily diagnosed with a clinical exam and a little blood test and there are various treatments available, varying from Methimazole transdermal ointment or tablets to slow down thyroid hormone production, surgery to remove the overactive thyroid gland or radiotherapy. If your kitty is suffering from hyperthyroidism your vet will discuss the various options. I suggest you make an appointment tomorrow.

[Allergies](https://www.petcoach.co/cat/condition/feline-allergies/) are the most common cause of hair loss and [excessive grooming in cats](https://www.petcoach.co/article/excessive-grooming-in-cats-what-it-means-and-how-to-help), but there are several other medical causes as well - including [fleas](https://www.petcoach.co/article/5-tips-to-get-rid-of-fleas/), bacterial or fungal infections, or skin mites. I would definitely start your cat on a good monthly spot-on product such as [Advantage II](https://www.petco.com/shop/en/petcostore/product/cat/cat-flea-and-tick/cat-flea-and-tick-drops/advantage-ii-once-a-month-cat-and-kitten-topical-flea-treatment-over-9-lbs) to make sure fleas are not the problem - you can get this over the counter at many pet stores. If this doesn't resolve the problem, you will need to have your cat examined by a vet - he/she can do some testing if needed to diagnose the problem and get your kitty the appropriate prescription medications to treat it. Behavioral causes, such as stress or anxiety, can also lead to overgrooming. [Calming supplements](https://www.petco.com/shop/en/petcostore/category/cat/cat-training/cat-training-calming-aids/calming-cat-supplements) or [pheromone products](https://www.petco.com/shop/en/petcostore/brand/feliway) can be found at the lcocal Petco. If these do not improve the condition, your veterinarian may recommend prescription strength remedies.

Hello, thank you for using Petco Pet Education Center, formerly Petcoach. From the photo there does not appear to be any bald spots, however, it is not a very close up view. Honestly, unless there are bald spots and/or she is scratching the area I would not be too concerned. If the problem persists though (like for a few months) then you should take her to your vet for an exam. Some reasons there could be changes in the hair coat: 1. Diet - the special diet she is eating may be causing some nutrient imbalance. You should talk to your vet about putting her on a supplement for her coat (like fish oils) as this may help. 2. Skin Allergies - even if she has never had any symptoms of allergies before, they can develop over time. If this was the case though, I would expect hair loss and/or scratching, redness of the skin, etc. If you are not seeing any of that then this is not as likely to be the problem. 3. Fleas - again, I would expect hair loss and scratching. If you are not noticing that, then this is also not very likely to be the problem. 4. Stress - even if you don't think your cat is stressed, she could be. Try to see if you could think of anything that could be causing stress like visiting family, stray cats hanging around outside, you got a new pet, new furniture, etc.... 5. Thyroid disease- either a low or high thyroid can cause problems with the hair coat. Your vet can do a blood test to check for this. Hope this helps. Best wishes.