Clinical Correlation Flashcards
Herpes Zoster
shingles
Where does the varicella virus establish permanent latent infection?
dorsal root and cranial nerve ganglia
What does Herpes Zoster outbreak cause?
vesicular rash in a dermatome region
what is the risk of someone who already has varicella of getting HZ?
30%
How many ganglia does the HZ infection hit?
NORMALLY one, sometimes more than one
Prodrome of HZ
HA, photophobia, malaise, fever, abnormal skin sensations and pain (tingling)
HZ rash
unilateral
only hits one side of the body
1-3 adjacent dermatome
What dermatome is most common for HZ
thoracic, cranial, ophthalmic involvement
What is the time that is critical to get help within for HZ
72 hours
how long does it take for HZ to resolve?
2-4 weeks
zoster sine herpetes
rash never forms
rare
complications of HZ
PHN
PHN
complication of HZ
pain for weeks/months/years
chance increases after age 50
Herpes Zosters Ophthalmicus
- 15% of cases
- rash or vesicle on tip of nose means GREAT chance of hitting eye
- trigeminal area
- if untreated, 50-70% develop acute ocular complications
Transmission of herpes zoster
from persons with zoster to persons with no history of varicella disease or fax and cause varicella