Cat scratch disease (CSD) is an illness caused by the bacterium Bartonella henselae. Almost half of all cats carry the infection at some point. The infection does not make cats sick. However, the scratch or bite of an infected cat can cause symptoms in people, including
- Swollen lymph nodes, especially around the head, neck, and upper limbs
- Poor appetite
For people with weak immune systems, CSD may cause more serious problems. The best way to avoid CSD is to avoid rough play with cats that could lead to scratches or bites. If you do get a scratch or bite, wash it well with soap and water. If the bite or scratch gets infected or if you have symptoms of CSD, call your doctor.
Centers for Disease Control and Prevention
- Cat scratch disease (Medical Encyclopedia) Also in Spanish
- Cat Scratch Disease (For Parents) (Nemours Foundation)
- Cat-Scratch Disease (American Academy of Family Physicians) Also in Spanish
- Cat-Scratch Disease (Centers for Disease Control and Prevention)
- Cats (Centers for Disease Control and Prevention)
- CSD skin test (Medical Encyclopedia) Also in Spanish
- National Institute of Allergy and Infectious Diseases
- ClinicalTrials.gov: Cat-Scratch Disease (National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Transverse Myelitis and Guillain-Barré Syndrome Overlap Secondary to Bartonella henselae: Case...
- Article: Gastrointestinal Ulcers in a Patient With a Solitary Enlarged Lymph Node.
- Article: Hepatosplenic abscesses in an immunocompetent child with cat-scratch disease from Peru.
- Cat Scratch Disease -- see more articles