Why is my cat's mouth swollen and bleeding? Is it a bee sting?

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Steluta!! I agree, the most common reason for the swelling is likely an insect bite or other allergic reaction. If the chin is still swollen tomorrow or her attitude and eating habits change have her seen tomorrow by your Vet. The mainstay of treating allergic reactions are steroids in cats. I would want to have her mouth examined well first to be complete. I hope this helps and I wish Steluta a speedy recovery!

Facial swelling can be caused by an allergic reaction to something such as an insect sting or spider bite, an abscess from an injury, or even an abscessed tooth (unlikely in such a young cat). I would encourage you to have him evaluated by your veterinarian as soon as possible. Depending on what the diagnosis is will determine what medications are recommended. Best of luck and I hope he improves soon. Thank you for using Pet Coach.

This is a common look for cats who are allergic to their food bowls -- if any of his bowls are plastic, I'd recommend switching them out for glass and washing daily (or at least every other day). It could be caused by other allergies or a bug bite as well, and often goes away on it's own. If switching bowls (if applicable) and giving it a week doesn't make it go away, I'd recommend a vet visit.

This is an emergency. Your kitty could have a severe allergic reaction, or a snake bite or serious injury (maybe because of a collision with a car). He needs to be seen by a veterinarian right away. Please take him to a PetEr right now as this sounds life-threatening.

Although a picture of it would help to determine the underlying cause more specifically, this presentation seems to be likely related to a tooth abscess/infection. A clinical examination at your local veterinarian is essential to confirm these clinical suspicions and treat appropriately. Antibiotics may be needed. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

It's possible that it could be an allergy or infection. Additional causes could be an underlying viral illness that is coming back in times of stress or at regular intervals. Tooth abscesses may also cause pain in the mouth and jaw, as well as swelling. It would be best to have some more tests done by your vet next time it occurs, such as a dental X-ray, bloodwork, or sample of the affected area taken for testing. This may help you and your vet figure out what the underlying cause is.

She is a cutie! This could be from an insect/spider bite that has cause a local infection/abscess which is why is has started to swell. This could potentially be a cancerous mass that has caused an inflammatory reaction as well. Since it has recently become swollen, I would strongly recommend for your vet to take a look at it. Your vet will be able to aspirate the mass or swelling if needed. They can even take X-rays if needed if they are concerned about sinus or honey involvement. They will also be able to start her on some antibiotics and an anti-inflammatory if needed. I hope this helps!