Cat scratch disease

Question 1

What organism causes Cat Scratch Disease

Answer 1

Bartonella Henselae

Question 2

What type of organism is Bartonella Henselae

Answer 2

Intracellular, gram negative bacilli

Question 3

Risk factors for Bartonella

Answer 3

History of kitten/cat contact, transmitted by fleas

Question 4

Incubation period Bartonella

Answer 4

1-7 days, scratch to papule

Question 5

Typical CSD presentation

Answer 5

Gradual, regional painful lymph node enlargement (arm or neck)

Question 6

Clinical course for CSD

Answer 6

Self resolve in 4- 6 weeks, malaise/fever/fatigue in 30% of patients, 25% suppurate, 14% disseminated illness

Question 7

Parinaud Oculoglandular Syndrome

Answer 7

Unilateral granulomatous conjunctivitis, enlarged regional lymph node

Question 8

Diagnosis of CSD

Answer 8

Serology (convalescent), culture less useful as intracellular organism, histology

Question 9

Treatment

Answer 9

Self limiting, resolve in 1-2 months. Treat disseminated/immunocompromised patients with Azithromycin + Rifampicin or Cotrim/Clarithro/Cipro