| Sign / Symptom
|| Possible cause
| Abnormal clearish discharge from vagina
|| Doxycycline, tetracycline or azithromycin
|| Needs lab test initially and on follow up to ensure treatment is successful. Lab tests are not available in all countries / regions.
| Discharge of pus from vagina, marking pants
| Lab tests to confirm. Gonorrhoea is sexually transmitted. Bacterial vaginosis is caused by overgrowth of normal bacteria. Trichomonas: Not really an STI. Men carry it but don’t usually have signs. Can be passed on by sex between women if fluid from the vagina is exchanged.
| White curdy itchy discharge from vagina
|| Several effective
|| Very common. Sexually transmissible but not necessarily anything to do with your partner. Often due to overgrowth of one of the body’s normal germs, a kind of yeast, particularly after antibiotic for something else.
| Smelly "fishy" discharge from vagina
|| Bacterial Vaginosis
|| Flagyl etc
|| Common. Sexually transmissible but not necessarily anything to do with your partner. Often due to overgrowth of one of the body’s normally harmless germs, but needs treatment because it can cause complications. Tell doctor if you may be pregnant.
| Pain on passing water (peeing). Urge to pass water frequently.
|| Infection of urethra or bladder
|| Selected antibiotics
|| Common. Can be due to an STI but could be a urinary tract infection. Needs treatment because may lead to kidney damage. Seek medical advice.
| Itchy or painful, cold sore-like recurring ulcers or blisters in and around vagina
|| Zovirax: controls but rarely cures
|| Very common. The genital equivalent of cold sores. Spread by body contact and oral sex. Seek medical help & tell doctor if you may be pregnant.
| Itchy skin, reddish rash in pubic area
Generalised itchy rash
| Parasiticidal preparations
|| Contagious. Easily treated. Visit sexual health (GUM) clinic.
| Genital warts
|| Various treatments
|| Sexually transmissible and caused by a virus. Spread by body contact. Warts can readily be removed surgically or with ointments.
| Painless watery papule or blister on or in the entrance to the vagina. Weepy discharge. Later a general skin rash on most of the body.
|| Usually sexually transmitted. Distinguished from the much commoner herpes because latter are painful. Syphilis is very infectious. Papule initially goes away if untreated by infection invades whole body and reappears in a more serious form. Easily confirmed by laboratory tests. Fairly easily and cheaply treated but it is really important that you don't delay. There are also non sexually transmitted forms in warm regions of the world.