Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Cat-scratch disease (CSD) is a bacterial infection caused by Bartonella henselae, typically transmitted through scratches or bites from infected cats. Symptoms include swelling of lymph nodes near the site of injury, fever, and fatigue.
5 Must Know Facts For Your Next Test
CSD primarily affects the lymphatic system, leading to swollen and tender lymph nodes.
The causative agent is Bartonella henselae, a gram-negative bacterium.
Diagnosis often involves serological tests to detect antibodies against Bartonella henselae.
Most cases are self-limiting and resolve without specific treatment, though antibiotics may be prescribed in severe cases.
Cats, especially kittens, are common carriers of Bartonella henselae bacteria.