ð ç« æ«éèš
- VZV: dsDNA herpes, 1 serotype, latency in DRG
- Primary varicella: vesicular rash in successive crops, âdewdrop on rose petalâ; adult/pregnant/immunocompromise severe
- Pregnancy: 1st trim congenital varicella syndrome; near delivery neonatal varicella
- Zoster: dermatomal painful rash; thoracic > others
- Hutchinsonâs sign = nose tip lesion â eye risk (V1 nasociliary)
- Ramsay Hunt: VII palsy + ear vesicles + vertigo (geniculate)
- PHN: > 90 d pain post-zoster; gabapentinoid / TCA / lidocaine / capsaicin
- Vaccines: Shingrix ⥠50 yr (or ⥠19 immunocompromise), 2-dose; > 90% efficacy
- Treatment: valacyclovir 1 g tid à 7d (within 72 hr); IV acyclovir for severe
- Empirical IV acyclovir for encephalitis / ophthalmicus / disseminated / immunocompromise
- Avoid aspirin in children (Reyeâs)
- VZV vasculopathy â stroke in elderly post-zoster