Session 9 - Genital Tract Infections Flashcards
What are the factors affecting STI transmission?
Age (15-24 yrs highest incidence) Ethnicity Socioeconomic class (poorer populations) Age at first sexual intercourse Number of partners Sexual orientation (MSM) Lack of condom use
Give some examples of common STI and the organisms that cause them.
Chlamydia - chlamydia trachomatis Gonorrhoea - neisseria gonorrhoea Syphilis - treponema pallidum Genital warts - human papilloma virus Herpes - herpes simplex 1 and 2 Candidiasis - candida species Scabies - sarcoptes scabei (not always transmitted sexually)
Give some possible differentials for urethritis, cervicitis and abnormal discharge.
Chlamydia
Gonorrhoea
Bacterial vaginosis
Vulvovagina candidiasis
Give some possible differentials for skin manifestions (of genital infections).
Anogenital warts
Scabies and pubic lice
Give some possible differentials for genital ulceration.
Herpes
Syphilis
Give some possible differentials for systemic presentations/complications of genital tract infections.
Pelvic inflammatory disease (PID)
Prostatitis
Sexually acquired reactive arthritis (SARA)
What is dysuria?
Painful or difficult urination
How does chlamydia present in males?
Mild urethritis Dysuria Epididymitis Proctitis Prostatitis
How does chlamydia present in females?
Asymptomatic
Increased discharge
Post coital bleeds
Dyspareunia
How does ocular inoculation of chlamydia present?
Manifests as conjunctivitis
How does pharyngeal chlamydia present?
Asymptomatic
How is chlamydia diagnosed in males?
Urine nucleic acid amplifications tests (NAAT)
Urethral swabs
Rectal and pharyngeal NAATs
How is chlamydia diagnosed in females?
Vulvulovaginal swabs for NAAT
Urine, rectal and pharyngeal NAATs
What treatment is given for chlamydia?
Doxycycline
How does gonorrhoea present in males?
Urethral discharge
Dysuria
Anal discharge