9. STIs

Question 1

what is the most common STI in the UK?

Answer 1

Chlamydia trachomatis (GNB)

Question 2

What are the symptoms of chlamydia in males? in females?

Answer 2

Males - symptoms may be mild:

• urethritis
• dysuria
• epididmytis

Females - mostly asymptomatic:

• increased discharge
• post-coital or intermenstrual bleeds
• dyspareunia

Question 3

How might delivery from a chlamydia +ve mother affect the baby?

Answer 3

conjunctivitis

Question 4

how would you treat chlamydia?

Answer 4

doxycyline OR

azithromycin

Question 5

how would Neisseria gonorrhea appear on gram stain?

Answer 5

gram negative diplococcus

Question 6

What are the symptoms of gonorrhea in males? in females?

Answer 6

Males:

• urethral/anal discharge
• dysuria

Females - often asymptomatic:

• altered discharge
• lower abdominal pain

Question 7

how would you treat gonorrhea?

Answer 7

IM Ceftriaxone + oral azithromycin

Question 8

what is the causative agent of syphilis? how would you treat this?

Answer 8

Treponema pallidum - spirochete bacterium

Penicillin

Question 9

Describe the 3 stages of syphillis.

Answer 9

Primary: genital or extra-genital painless ulcer (chancre)

Secondary (4-10wks later): rash, mucosal lesions, multi-system involvement

LATENT

Tertiary (up to 40yrs later): reactivation, e.g. neurogenic, cardiogenic

Question 10

which MOs can cause oral/genital warts and how would you treat this?

Answer 10

Herpes simplex virus - Aciclovir

Question 11

which organism can cause thin grey fishy smelling discharge?

Answer 11

Gardnerella vaginalis (gram negative rod)