Try it
Dentistry · Oral medicine and oral cancer: viral infections with facial palsy
Sample itemA 55-year-old has severe ear pain, a vesicular rash in the external ear canal and on the soft palate, vertigo and a unilateral lower motor neuron facial palsy. Which organism is responsible?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Varicella zoster virus
Ramsay Hunt syndrome is reactivation of varicella zoster virus in the geniculate ganglion, causing vesicles in the ear, sometimes the palate, with facial palsy. Early antiviral and steroid therapy improves recovery.
Option by option
A. Coxsackie virus A
Coxsackie viruses cause herpangina, with posterior oropharyngeal vesicles and no facial palsy.
B. Epstein-Barr virus
EBV causes infectious mononucleosis and hairy leukoplakia.
C. Varicella zoster virus (correct)
Correct. VZV in the geniculate ganglion causes this syndrome.
D. Herpes simplex virus 1
HSV-1 is linked to Bell palsy and gingivostomatitis but not this ear and palate vesicular pattern.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More Dentistry questions
- Tooth development: Hertwig's root sheathDuring tooth development, which structure induces odontoblast differentiation in the roo…
- Tooth eruption: first permanent toothA 6-year-old child has a new tooth behind the last deciduous molar, with no deciduous to…
- Tooth development: neonatal lineGround sections of deciduous teeth show an accentuated incremental line in enamel and de…
- Tooth development: cell rests of MalassezEpithelial cell rests of Malassez persist in the periodontal ligament. Which cyst most o…