STI's Flashcards
What organism causes Gonorrhoeae?
Neisseria Gonorrhoeae
Wat type of organism is Neisseria Gonorrhoeae?
Gram negative diplococcus
What is the intubation period of gonorrhoeae?
2-5 days
Who does gonorrhoeae normally affect?
Men who have sex with men?
What 3 ways does gonorrhoeae present in males?
Urethral discharge
Dysuria
Tender inguinal nodes
What 3 ways does gonorrhoeae present in females?
Cervicitis
Dysuria
Abnormal bleeding
What complication can occur in men if gonorrhoeae is left untreated?
Epididymis
What complication can occur in women if gonorrhoeae is left untreated?
Pelvic inflammatory disease
What can pelvic inflammatory disease lead to?
Infertility
what complications can occur in men and women if gonorrhoeae is left untreated?
Monoarthritis in elbow or shoulder
Disseminated gonococcal infection
How does a disseminated gonococcal skin infection present?
Skin lesion that is pustular with a halo
How do you diagnose gonorrhoea?
Microscopy and culture- NAAT on urine or exposed site
What is the management for gonorrhoea?
IM 1g ceftriaxone
What is an alternative treatment for gonorrhoea?
Oral cefixime 400mg (single dose) + oral azithromycin 2g (single dose)
What is another name for vaginal candidiasis?
Thrush
What is the fungal cause of vaginal candidiasis?
Candida albicans
What is an alternative fungal cause of vaginal candidiasis?
Candida glabrata
What are the main risk factors of vaginal candidiasis?
Diabetes
Immunosuppression
Pregnancy
Drugs: Antibiotics, Steroids
What is vaginal candidiasis if its symptomatic?
Thrush
What are the 4 main symptoms of thrush?
Discharge
Vulvitis
Itch
Vulval erythema
How is the thrush discharge described?
non-offensive cottage cheese
What is seen on examination of thrush?
Vulval erythema
Fissuring
Satellite lesions
How is thrush diagnosed?
Characteristic history of itching and discharge
What should be done if you aren’t sure about thrush?
Vaginal swab
What is the management of thrush if it is mild?
It may self-correct
What is the local treatment for thrush?
Clotrimazole pessary (500mg PV stat)
What is the oral treatment for thrush?
Itraconazole 200mg PO bd for 1 day or Fluconazole 150mg PO stat
What is the contraindication in pregnancy?
Oral treatment
What is the commonest cause of vaginal discharge?
Bacterial vaginosis
What is the main anaerobic organism?
Gardnerella vaginalis
What is the triad of bacterial vaginosis?
Overgrowth of BV associated bacteria
Reduction in lactic acid producing aerobic lactobacilli
Leads to raised vaginal pH.
Is bacterial vaginosis sexually transmitted?
No
Who is bacteria vaginosis exclusively seen in?
Sexually active women
How does bacterial vaginosis normally present in 50% of cases?
Asymptomatically
What is the main feature of bacterial vaginosis?
Fishy, offensive vaginal discharge
What is the criteria for diagnosis of bacterial vaginosis?
Amsel’s criteria
What is the requirement for the diagnosis of bacterial vaginosis?
3 of the 4 points of Amsel’s criteria
What are the 4 points of the Amsel’s criteria?
Thin, white homogenous discharge
Clue cells on microscopy: stippled vaginal epithelial cells
Vaginal pH > 4.5
Positive whiff test (addition of potassium hydroxide results in fishy odour)
What is the management of bacterial vaginosis?
Oral metronidazole for 5-7 days
What are the alternative managements for bacterial vaginosis?
Topical metronidazole Topical clindamycin
What are the complications of bacterial vaginosis?
Endometritis if uterine instrumentation/delivery
Premature labour
HIV acquisition
What are the alternative managements for bacterial vaginosis?
Topical metronidazole
Topical clindamycin
What is the most prevalent sexually transmitted infection in the UK?
Chlamydia
How long is the intubation period for chlamydia?
7-21 days
What is the bacterial cause of chlamydia?
Chlamydia trachomatis
How does chlamydia mainly present?
Asymptomatically
What way can chlamydia present in women?
Cervicitis-discharge and bleeding
Dysuria
What way an chlamydia present in men?
Urethral discharge
Dysuria
What is the first line investigation for chlamydia in women?
Vulvovaginal swab
What is the first line investigation for chlamydia in men?
Urine test
What do you use to test the specimens in chlamydia?
NAAT
What is the first line management of chlamydia?
Doxycycline 100mg
What is the management of chlamydia when pregnant?
Azithromycin 1g
What is the main complication of chlamydia in men?
Epididymitis
What are the main complications of chlamydia in women?
Pelvic inflammatory disease
Endometritis
Infertility
What are the complications of chlamydia in males and females?
Reactive arthritis
Reiter’s syndrome
Perihepatitis
What are the 2 strains of herpes?
HSV-1
HSV-2
Which strain are genital herpes more commonly caused by?
HSV-2
What is the intubation period of herpes?
5 days
What might a primary infection of herpes present with?
Severe gingivostomatitis
What is gingivostomatitis?
Raw gums
Ulcers around mouth
Fever
What can herpes also present with?
Cold sores
Painful genital ulcers
Tender inguinal lymphnodes
Dysuria
What can recurrent episodes of herpes present with?
Neuralgic pain in the back, pelvis and legs
What in the main diagnosis of herpes?
Clinical diagnosis
What can you use to confirm herpes?
Swab of the ulcer
What is the management of the gingivostomatitis?
Oral aciclovir
Chlorhexidine mouthwash
What is the management of genital herpes?
Oral acicilovir
What is the management of herpes cold sores?
Topical aciclovir
What is the management if primary attack of herpes occurs at greater than 28 weeks gestation
Caesarean section
What should pregnant women with recurrent herpes be treated with?
Suppressive therapy
What are the main complications of herpes?
Autonomic neuropathy (urinary retention)
Neonatal infection
Secondary infection
What is trichomoniasis caused by?
Trichomonas vaginalis
What type of organism is trichomonas vaginalis?
Parasite
What are the main presentations of trichomonas in women?
Vaginal discharge
vulvovaginitis
strawberry cervix
pH>4.5
How is the vaginal discharge in trichomonas described?
Offensive
Yellow/green
Frothy
What are the main presentations of trichomonas in men?
Asymptomatic
Urethritis
What is the main investigation of trichomoniasis?
Microscopy of a wet mount shows motile trophozoites
What is the management of trichomoniasis?
Oral metronidazole for 5-7 days
What are the main complications of trichomoniasis?
Miscarriage
Premature birth
What are the main causes of anogenital warts?
HPV types 6 and 11
How do anogenital warts present?
Small ) fleshy protuberances which are slightly pigmented
May bleed or itch
How are anogenital arts diagnosed?
Visual inspection
What is the first line management of anogenital warts?
Topical podophyllum
Cryotherapy
What is second line management of anogenital warts?
Imiquimod (topical cream)
What is syphilis caused by?
Treponema pallidum
What type of bacteria is treponema pallidum?
A spirochaete
What is the primary feature of syphilis?
Chancre (a painless ulcer at the site of sexual contact)
What are the secondary features of syphilis?
Rash on trunk, palms and soles
Buccal ‘snail track’ ulcers (30%)
What does early latent mean? (syphilis)
No symptoms but less than 2 years since caught
What does late latent mean? (syphilis)
No symptoms but more than 2 years since caught
How is syphilis diagnosed?
Clinical signs
Serology
What is looked for in syphilis serology?
TP
IgGEIA
TPPA
RPR
What is the first line management of syphilis?
Intramuscular benzathine penicillin
What is the alternative management of syphilis?
Doxycycline
What are the main complications of syphilis?
Neurosyphilis – cranial nerve palsies are commonest
Cardiac or aortal involvement
Congenital syphilis
What is balanitis?
Inflammation of the glans penis
What is prosthitis?
Inflammation of the foreskin
What is inflammation of of both the glans penis and the foreskin?
Balanoposthitis
What is the bacterial cause of balanitis?
Candida balanitis
How does balanitis present?
Rash at the end of the penis
How is balanitis diagnosed?
Clinical history ad examination
What is the general management of balanitis?
Gentle saline washes
Wash properly under the foreskin
What is the management of balanitis with severe irritation and discomfort?
1% hydrocortisone