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What Is Cat Scratch Disease?

Cat scratch disease, also called cat scratch fever, is a bacterial infection. It is an illness you can get after being scratched, licked, or bitten by a cat that is carrying the bacteria. It is usually a mild illness that is not serious in healthy people.

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What Is Cat Scratch Disease?

Cat scratch disease, also called cat scratch fever, is a bacterial infection. It is an illness you can get after being scratched, licked, or bitten by a cat that is carrying the bacteria. It is usually a mild illness that is not serious in healthy people.

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What Causes Cat Scratch Disease?

The infection is caused by a type of bacteria called *Bartonella henselae*. Cats, especially young kittens, get this bacteria from flea bites. The bacteria then live in the cat's saliva and on its claws. A cat can pass the infection to a person when it breaks their skin.

What Are the Symptoms?

The first sign is usually a small, raised bump or blister where the scratch or bite happened. This can take a few days to appear. Then, about one to three weeks later, the lymph nodes near the area will become swollen, tender, and painful. For example, a scratch on the arm can cause a swollen lymph node in the armpit. You may also have a low fever or feel tired.

How Is Cat Scratch Disease Diagnosed?

A doctor can usually diagnose cat scratch disease by talking to you about your symptoms and doing a physical exam. They will ask you if you have been around a cat or kitten. In some cases, a doctor may do a blood test to check for the bacteria, but this is not always needed.

How Is Cat Scratch Disease Treated?

For most healthy people, the infection will go away on its own without any medicine. Your doctor may suggest a warm compress for the swollen lymph nodes and pain relievers. If the infection is severe or if you have a weak immune system, your doctor will prescribe antibiotics to help fight the bacteria.

FAQs on Cat Scratch Disease

Is cat scratch disease dangerous?

For most healthy children and adults, it is a mild illness. It can be more serious for people who have a weak immune system, such as people with HIV or who are on chemotherapy.

Does my cat need to be sick to give it to me?

No. Cats that carry the *Bartonella henselae* bacteria usually do not look sick at all. They are just carriers of the bacteria.

How can I prevent it?

The best way to prevent it is to wash any cat scratches or bites right away with soap and water. You should also use flea control on your pets and avoid playing too rough with your cat, especially kittens.

When to See Your Doctor

You should see a doctor if a cat scratch or bite becomes very red, swollen, or is leaking pus. You should also see a doctor if you develop very large, painful lymph nodes or a high fever after being around a cat.