Have Cat Questions? Ask a Cat Vet Online.
Hello. Thanks for writing in. My name is***** and I would be happy to help you. I am not set up to do phone calls but would be happy to answer any questions you do have online. If you get a request for a phone call, it is from the website and not myself. If the joints are swollen, my primary concern would be that he develops infected joints. Typically the joints are warm to the touch and painful, but that may not always be the case. If the entire limb is swollen, it could be a cellulitis (infection under the skin) or an allergic reaction (maybe an insect sting). With the other kittens sucking his paw pads raw, though, I would not be surprised if an infection extended up into the leg. Besides trauma, an immune mediated issue and an infected joint; not much else will cause joint swelling. If multiple joints are affected, it probably isn't trauma. I would highly recommend getting him seen by your vet today, especially since this has seemed to come on quickly. Please let me know if you have any other questions or concerns. Hope this helps.
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Well, not if it is an immune mediated or infectious cause. You can try placing a warm compress around the leg for a short period of time to see if you can get the swelling down. Let me know if you have further concerns.