Which is the only bacterial conjunctivitis known to cause both (+) preauricular lymphadenopathy and pseudomembranes?

Prepare for the NBEO Ocular Disease Part 1 test with interactive questions, detailed explanations, and study guides. Ace your exam with confidence!

Multiple Choice

Which is the only bacterial conjunctivitis known to cause both (+) preauricular lymphadenopathy and pseudomembranes?

Explanation:
Pseudomembranes form when the conjunctiva undergoes a very intense inflammatory reaction with fibrin-rich exudate, creating a membrane that can be peeled from the surface. When this membrane-forming process occurs with a conjunctival infection that also produces marked preauricular lymph node swelling, the combination is most characteristic of gonococcal conjunctivitis caused by Neisseria gonorrhoeae. This infection is typically hyperacute, with copious purulent discharge and severe inflammation that can lead to pseudomembrane formation and regional lymphadenopathy. Other bacterial causes rarely present with true pseudomembranes, and viruses can cause preauricular nodes but not the membrane formation. Therefore, gonococcal conjunctivitis best explains both findings together.

Pseudomembranes form when the conjunctiva undergoes a very intense inflammatory reaction with fibrin-rich exudate, creating a membrane that can be peeled from the surface. When this membrane-forming process occurs with a conjunctival infection that also produces marked preauricular lymph node swelling, the combination is most characteristic of gonococcal conjunctivitis caused by Neisseria gonorrhoeae. This infection is typically hyperacute, with copious purulent discharge and severe inflammation that can lead to pseudomembrane formation and regional lymphadenopathy. Other bacterial causes rarely present with true pseudomembranes, and viruses can cause preauricular nodes but not the membrane formation. Therefore, gonococcal conjunctivitis best explains both findings together.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy