CAT SCRATCH DISEASE

Q.6) A6-year-old girl presents with unilateral nonpainful, nonsuppurative conjunctivitis and preauricular lymphadenitis. What is the most likely causative organism?
(A) Mycobacterium avium
(B) Bartonella henselae
(C) Adenovirus
(D) Staphylococcus aureus
(E) Chlamydia trachomati

Ans: (B) Bartonella henselae
This patient presents with Parinaud oculoglandular syndrome. This syndrome is the

most common atypical presentation of cat scratch disease (CSD) but can also occur with

tularemia, tuberculosis, and syphilis. CSD is one of the most common causes of subacute

lymphadenitis in children. Bartonella henselae is the organism that has been associated with the

clinical syndrome of CSD. Bartonella henselae is transmitted among cats by fleas and bacteremic cats transmit the disease to humans through saliva. Human-to-human transmission does not occur. The conjunctiva is the site of inoculation in oculoglandular syndrome and the conjunctivitis is typically painless and nonsuppurative. A conjunctival granuloma may be present at the inoculation site. 

Lymphadenopathy most often occurs in the preauricular nodes and less commonly submandibular.