Most Common STIs
Chlamydia: One of the most commonly reported STIs, but because it is often asymptomatic it can be undiagnosed. When symptoms do present they include abnormal discharge, burning sensation during urination and pain during sex. Left untreated it can lead to complications like pelvic inflammatory disease. Chlamydia is completely curable with antibiotics.
Gonorrhea: While it is similar to chlamydia in that it is often asymptomatic, gonorrhea can include pelvic and testicular pain or bleeding, painful urination and abnormal discharge. It is becoming more resistant to antibiotics, so specialized treatment is needed.
Syphilis: Syphilis can progress in stages, from painless sores on the genitals or mouth to full skin rashes and swollen lymph nodes, to a severe infection affecting the heart, brain and other organs. Syphilis is easily cured when caught early. Look out for painless, round, firm and smooth-edged sores.
Herpes: Herpes sores start as small painful blisters that eventually rupture. They often appear in clusters on the genitals, buttocks or mouth and often recur in the same location due to the reactivation of the virus. Antiviral medications can help manage outbreaks and reduce transmission. But, after initial healing, the herpes virus is dormant but can recur due to stress or illness.
Human Papillomavirus (HPV): HPV is the most common STI and the virus can be cleared by the body’s own immune system without symptoms. But, certain strains of HPV can lead to genital warts or even cancer (cervical, anal or throat). Because it is often asymptomatic it is highly transmissible.
Trichomoniasis: Trichomoniasis is caused by a parasite rather than a bacteria or virus and is treatable with an antiparasitic medication. Men are more likely to be asymptomatic and able to spread the infection. Women experience itching, burning, redness and discharge. If left untreated, trichomoniasis can lead to an increased risk of other STIs and in pregnant women, premature birth.