What are these dots on my cat's skin, especially under her arm?

Hi, thank you for using PetCoach. Those black dots are blackheads (clogged pores). It is not typically a serious problem. It is not related to a flea problem. Feline blackheads often result when cats don't groom themselves properly but it could also be from overactive oil glands or certain yeast or bacterial infections. Stress and food allergies can also contribute to this issue. You can try these medicated wipes on the affected area once a day. If after about 7-10 days there is not much improvement then you should have Dino examined by your vet. ( https://www.amazon.sg/Douxo-30-Count-Chlorhexidine-Pads/dp/B00G3D8JL0 ) Hope this helps. Best wishes!

Thanks for using Petco Pet Education Center, formerly Petcoach! This looks like a focal infection. You can try to use chlorhexidine containing pads (such as the Douxo chlorhexidine 3% PS pads) to clean the are twice daily for 7 days. You may find these online or at your local pet store. If there is no improvement or in the meantime this appears to be getting worse, have her evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly a focal infection though it is difficult to know without an examination of the area. If this is a superficial rash, you can try to use chlorhexidine containing pads (such as the Douxo chlorhexidine 3% PS pads) to clean the are twice daily for 7 days. You may find these online or at your local pet store. If there is no improvement or in the meantime this appears to be getting worse, have him evaluated by a veterinarian for further assessment and treatment. Good luck and have a good day!

Thanks for using Petco Pet Education Center, formerly Petcoach! This looks like a focal infection. You can try to use chlorhexidine containing pads (such as the Douxo chlorhexidine 3% PS pads) to clean the are twice daily for 7 days. You may find these online or at your local pet store. If there is no improvement or in the meantime this appears to be getting worse, have her evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

Thanks for using Petco Pet Education Center, formerly Petcoach! This looks like a focal infection. You can try to use a medicated shampoo containing chlorhexidine twice weekly for 2 weeks. If there is no improvement or in the meantime this appears to be getting worse, have her evaluated by a veterinarian for further assessment and treatment. Good luck and have a good day!

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. A secondary infection is likely and also needs to be addressed. A topical is not likely to be of much help here. You could consider using an e-collar to prevent licking if that is currently an issue. 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!

Those are comodones, like plugged follicles/pores. It could be due to any number of underlying conditions: ringworm, skin mites (or other skin parasites) or even allergies. My recommendation would be to change the diet. Whatever you are feeding may be causing this issue. A hypoallergenic diet may be a good choice. I would also recommend you use this mousse. It is nice because it works like a shampoo but you don't actually have to bathe your cat. It is leave on treatment. Use as directed on the label. I would use it twice a week for the first couple weeks. If no improvement you should probably take him for a vet visit. http://www.allivet.com/p-5575-phytovet-ck-antiseptic-mousse-68-oz.aspx I hope this helps. Best wishes.