My cat has oozing lumps on her back and is throwing up. Help!

She sounds pretty sick, and I'm concerned about her symptoms, especially that she is losing weight really fast. This is not something that can be treated at home, she needs to see a vet immediately. Please take her into one now.

Hi there, it is hard to give you a specific answer regarding these bumps without seeing them, but I will try and give you some suggestions. If the lumps have just come up and feel soft they could be urticaria from an allergic reaction. Likewise if they are fairly new and are red or hot they may be caused by a skin infection. However, if the lumps have been there for a while again they could be infection but they could also be little growths in the skin. Have a good feel and if they are under the skin and soft they could be fatty lumps. If they are hard and in the skin they could be cysts, and if on top get may be warts. Unfortunately there is also the possibility the growths could be tumours. If you like you can repost with some photographs or more information and we can try and help more. I would recommend going to the vet to have he lumps checked f they have been there for a while. If they have just come up and don't look infected you could wait a day or so and give an antihistamine in case of allergic reaction.

Thanks for using Petco Pet Education Center, formerly Petcoach! It looks like Lily has a skin infection. I recommend taking her to a vet for antibiotic’s and something to relieve the itching. It is possible to be from a food allergy or an environmental allergy. This may be the cause of her vomiting as well. You need to speak with a veterinarian about what she eats and the environment she is in. They will then be able to treat her appropriately. Good luck and kisses to Lily!

Poor Nova! I don't think you're over-reacting at all, these are definitely signs that something isn't right. There are many things that could cause scabs or sores on her back. The most common possibilities would include allergies (food allergies, or an allergy to something in the environment), fleas, a bacterial or fungal skin infection, or skin mites (mange). The vomiting could be related if Nova has food allergies, or it could be due to a separate problem. Treatment for these issues will depend on what the underlying problem is, so I would recommend taking Nova to the vet for an exam when you are able to. He/she can do some simple skin tests and may also recommend blood work if needed to help diagnose the problem and get her started on appropriate treatment.

I'm wondering if your cat is spayed or not. If your cat isn't spayed, she could have a mammary tumor. In cats, 90% of these are malignant. She does have to see a vet for this problem, as a malignant tumor could also be causing her to vomit. Please take her into a vet now. Best of luck.

Pixie could be having an allergic reaction but an early skin infection is also possible. If more bumps appear, or these do not go away with using a mild shampoo bath, I recommend she get checked out by her veterinarian as she may need antibiotics for an infection.

This is probably caused by an allergic reaction. first of all make sure you flea your cat regularly every month with a high quality spot on (ex. Advantage) as fleas are by far the most common reason for these reactions. If the fleas are not the problem, it could be an allergic reaction to food or an environmental factor. this is more complicated to treat and will sometimes require medications such as Steroids, anti histamines or cyclosporin in order to stop the allergy. Regarding the lump, it needs to be checked to make sure it's not a tumor, usually a simple FNA test can give some answers regarding the nature of the lump.