STD's Overview Flashcards
4 Causes of genital ulcers
- HSV-2 (and -1)
- Primary syphilis: Treponema pallidum
- LGV: Chlamydia trachomatis L1-L3
- Chancroid: Haemophilis ducreyi
6 Causes of “drips”
- Chlamydia trachomatis D-K
- Gonorrhea: Neisseria gonorrhoeae
- Ureaplasma urelyticum
- Trichomoniasis: Trichomonas vaginalis
- Candidiasis: Candida albicans
- BV: Gardnerella vaginalis + other anaerobes
3 Causes of warts:
- HPV
- Secondary syphilis
- Molluscum contagiosum (a Pox virus)
HSV structure?
enveloped, large dsDNA
HSV-__ is usually oral
HSV-__ is usually genital
1
2
HSV diagnosis is via:
blood PCR
What is a Tzanck smear?
smear used to visualized multinucleated giant cells, which are dx of HSV
What is notable about the presentation of primary and recurrent herpes?
they are hard to distinguish: painful, clustered blisters (although 1’ may be more painful)
Treponema palladium is what type of bacteria? Thus, it cannot be seen by _____, and must be visualized by _____.
spirochete
Gram stain
darkfield microscopy
What are the classic symptoms associated with primary, secondary and tertiary syphilis?
1' = chancre 2' = maculopapular rash (even on hands) 3' = gummas, dementia, aortic aneurysm
Preferred testing for syphilis?
Other options?
- RPR
- VDRL
* *non-treponemal testing (cheaper, specific)
Other = Treponemal FTA-Abs
DOC for syphilis?
PCN
LGV: Chlamydia trachomatis L1-3 is characterized by what symptom?
swollen inguinal lesion
Painless lesion on penis =
syphilis
Painful lesion on penis =
herpes
chanchroid
Dysuria + painful =
trich
Itchy + discharge =
candida
Exudate + smell =
BV
Neisseria gonorrhoeae:
Structure?
G- diplococci
Kissing kidney beans
Neisseria gonorrhoeae:
Clinical presentation?
purulent urethritis/cervicitis
PID
Neisseria gonorrhoeae:
Dx?
growth on Thayer Martin medium or Gram stain of urethral smear