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TM: Syndromic Approach to STIs (iii) (HPV (warts (Tx (topical: e.g.…
TM: Syndromic Approach to STIs (iii)
Syphilis
treponema pallidum
spirochete
different symptomatic stages
primary
painless chancre @ inoculation site 3 wks after exposure (female 1 may be int)
secondary
systemic illness 3 months later
blood dissemination - multiple manifestations
adenopathy
malaise
rash (diffuse macular-papular over trunk + extremities)
mimics vasculitis
1/3 resolve, 1/3 progress to latent, 1/3 progress to tertiary
latent
approx 3 yrs (2-4)
tertiary
CVS
aortitis
endarteritis
neurosyphilis
gummatous
skin
soft tissue
bone
ocular
transplacental transmission = congenital syphilis
Dx
dark field microscopy of chancre swab (spiriochetes don't stain)
serology
TPPA/TPHA
treponemal
T pallidum particle agglutination
stays +ve
RPR/VDRL
non-treponemal (tests for Abs)
should decrease x4 in 3-6 months
-ve @ 1-2 yrs
non-specific
quantitative
used to measure response to tx
rapid plasma regain / venereal disease research lab
tx
penicillin G
2.4 million units IM
in tertiary will require 3 doses (wkly)
if allergic consider densenitisation
patients with HIV may need longer
suboptimal alternatives
doxycycline
amoxicillin
ceftriaxone
azithromycin
longer courses
risks
densentisation
Jarisch Herxheimer reaction
fever
headache
myalgia
HTN
looks similar to anaphylaxis
warn patient
give antipyretics
NOT A PENICILLIN ALLERGY
HPV
non-enveloped ds DNA virus
over 200 types
contracted through direct contact
warts
1% prevalence in USA among sexually active 15-49 y/os
peak age group = 20-24 yrs
common areas: penile, perineal, perianal, vulval
common
itching, discomfort, cosmetic nuisance
not premalignant
30% resolve untxed, but often recur
Tx
topical: e.g. podophyllotoxin 10-20%, imiquimod
cryotherapy
surgery (rare)
incubation period unknown (approx 3 wks - 8 months)
over 75% of sexually active pop > HPV infection but only 15% of these develop warts
quadrivlent vaccine (Gardasil) now available for schoolgirls + boys