The bump is raised slightly. If there are multiple bumps in the same area. [1] X Research source
Try to notice if your cat experiences pain when you or they touch the blister. Blisters around the neck or in your cat’s ear may cause your cat significant discomfort. Blood blisters on the pads of your cat’s feet may cause your cat to limp.
The vet will question you about your cat’s history of blood blisters, possible trauma, or any other symptoms. If you’ve noticed changes in the blood blister, such as bleeding from it, let your vet know.
Your vet may take a biopsy of the blister and send it off for a pathological analysis. [3] X Research source This analysis will test to see if the bump is a blood blister or if it is some sort of cancer, fungus, or growth. Your vet may order a blood platelet count test to see if your cat has any blood disorders. [4] X Research source
Be aware that blood blisters are sometimes confused with modular melanoma – a potentially life threatening cancer if left untreated. [5] X Research source
Excess friction or pressure on a specific part of your cat’s body. For example, your cat may develop a blood blister underneath their collar. Trauma to a part of the body. Blood diseases.
Blood blisters may take between a month and a month and a half to disappear. You will likely see the bump slowly reduce before discoloration disappears. Avoid irritating the blood blister if your vet recommends leaving it alone. If your cat seems intent on licking the blister, you may need to purchase an Elizabethan collar from a pet supply store near you. The collar will prevent your cat from getting to the blister.
Aspiration may not be effective as the blister may refill with blood. Your veterinarian may recommend aspiration if the blister has not gone away on its own over a month or two. [8] X Research source
