STIs

Question 1

What is the most common STI in the UK?

Answer 1

Chlamydia

Question 2

What is the full name of the bacteria responsible for causing chlamydia?

Answer 2

Chlamydia trachomatis

Question 3

What percentage of chlamydia sufferers are thought to be asymptomatic?

Answer 3

50% of men

70% of women

Question 4

What are the symptoms of chlamydia?

Answer 4

Pain passing urine
White, cloudy discharge
Testicle pain
Itchy vulva
Irregular bleeding

Question 5

What are the complications of chlamydia if untreated?

Answer 5

Pelvic inflammatory disease
Tubal factor infertility
Ectopic pregnancy
Chronic pelvic pain

Question 6

What is the treatment for chlamydia?

Answer 6

Single dose 1g azithromycin
OR
100mg doxycycline bd for 7 days
OR
500mg erythromycin bd for 14 days

Question 7

What is urethritis?

Answer 7

Inflammation of the urethra more commonly in men

Question 8

What are the potential causative organisms of urethritis?

Answer 8

Neisseria gonorrhoea
Chlamydia trachomatis
Ureaplasma urealyticum
Mycoplasma genitalum

Question 9

What are the symptoms of urethritis?

Answer 9

Dysuria
Inflamed foreskin
White/yellow discharge
Testicle swelling
Abdominal pain

Question 10

What is the exceptional symptom for non-gonococcal urethritis?

Answer 10

Penile tip irritation

Question 11

What is the treatment for gonococcal urethritis?

Answer 11

Ceftriaxone 500mg IM OR cefixime 400mg PO

AND azithromycin 1g PO

Question 12

What is the standard treatment for non-gonococcal urethritis?

Answer 12

Treat as for chlamydia as it is usually the cause with 1g of azithromycin.

Question 13

What are the risk factors for bacterial vaginosis?

Answer 13

Sexual activity
Smoker
Black
IUD

Question 14

What is the cause of bacterial vaginosis?

Answer 14

Anaerobic organisms proliferating due to washing away of normal flora, increasing pH.

Question 15

What is the characteristic symptom of bacterial vaginosis?

Answer 15

White ‘fishy’ discharge.

Question 16

What is the treatment for bacterial vaginosis?

Answer 16

Metronidazole 400mg bd for 7 days
OR
Clindamycin 300mg bd for 7 days
Available for oral use or as intravaginal gels

Question 17

What are the methods of transmission of trichomoniasis?

Answer 17

Transmitted via sex and sharing towels, more common in women.

Question 18

What is the causative organism of trichomoniasis?

Answer 18

Protazoa trichomoniasis vaginalis

Question 19

What proportion of sufferers of trichomoniasis are asymptomatic?

Answer 19

10-50%

Question 20

What are the symptoms of trichomoniasis?

Answer 20

Yellow, frothy discharge
Unpleasant smell
Itchy/sore vuvla
Dysuria

Question 21

What is the treatment for trichomoniasis?

Answer 21

Metronidazole 2g as a single dose OR 400mg bd for 7 days

Question 22

What are herpetic lesions on the hands?

Answer 22

Whitlows

Question 23

What are the symptoms of herpes?

Answer 23

Blisters

Flu like symptoms

Question 24

What is the treatment for genital herpes?

Answer 24

Doesn’t cure it but can improve symptoms
Aciclovir 500mg 5 times a day for 5 days
Topical 5% cream available

Question 25

What is stage 1 of the syphilis infection?

Answer 25

0-90 days- painless but highly infective ulcer. Lymphadenopathy heals without treatment in 2-6 weeks.

Question 26

What is stage 2 of the syphilis infection?

Answer 26

4-10 weeks- non irritating rash on chest, back and palms. Lymph node enlargement and wart like genital growths.

Question 27

What is stage 3 of the syphilis infection?

Answer 27

3-15 years- neurological disease, soft tumour like growths (gumma), chancre development at site of infection

Question 28

How is early syphilis treated?

Answer 28

IM benzathine penicillin G 2.4MU | IM procaine penicillin G 600000UI for 10 days

Question 29

How is syphilis treated in penicillin allergic patients?

Answer 29

100mg doxycycline bd for 7/14 days

Question 30

How is latent syphilis treated?

Answer 30

Prevention of neurological involvement IM benzathine penicillin G 2.4MU for 14 days IM procaine penicillin G 600000UI for 17 days

Question 31

What is the cause of anogenital warts?

Answer 31

HPV

Question 32

What are the symptoms of anogenital warts?

Answer 32

Smooth, flat bumps Large cauliflower like lumps Painless but itchy

Question 33

How are soft non keratinised anogenital warts treated?

Answer 33

Podophyllotoxin and trichloroacetic acid 0.5% cream bd for 3 days, weekly for 5 weeks OR 3 times weekly at night for up to 16 weeks

Question 34

How are keratinised anogenital warts treated?

Answer 34

Respond to ablative therapy