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Sexually transmitted diseases (STDs), also commonly referred to as sexually transmitted infections (STIs), are primarily spread through the exchange of bodily fluids during sexual contact. STDs may also be transmitted through blood-to-blood contact and from a woman to her baby during pregnancy or delivery (congenital transmission). Exposure to STDs can occur through any close exposure to the genitals, rectum, or mouth. Unprotected sexual contact increases the likelihood of contracting an STD. Abstaining from sexual contact can prevent STDs, and correct and consistent use of latex condoms reduces the risk of transmission. STDs include gonorrhea, chlamydia, genital herpes, syphilis, human papillomavirus or genital warts, lymphogranuloma venereum, trichomoniasis, bacterial vaginosis, human immunodeficiency virus (HIV), which causes AIDS, and hepatitis B. Other infections that may be sexually transmitted include hepatitis C, cytomegalovirus, scabies, and pubic lice. Having an STD increases the risk of becoming infected with HIV if one is exposed to HIV. Most STDs canbe treated and cured, though important exceptions include HIV and genital herpes. Successful treatment of an STD cures the infection, resolves the clinical symptoms, and prevents transmission to others. HIV is not currently curable and can cause death. Genital herpes symptoms may be managed, but genital herpes is a recurrent, lifelong infection.

STDs remain a major public health concern due to their physical and psychological effects, as well as their economic toll. The Centers for Disease Control and Prevention (CDC) estimates that 19 million new infections occur each year, almost half of them among young people aged 15 to 24 years. Women, especially young women, ethnic minorities, and men who have sex with men (MSM) are often most affected by STDs (except chlamydia). The following are descriptions of key features associated with STDs.

Gonorrhea

Gonorrhea is caused by the bacterium Neissera gonorrheae and can be spread during vaginal, anal, or oral sex, as well as from a woman to her newborn during delivery regardless of whether the mother is symptomatic at the time. Gonorrhea can affect the urethra, rectum, throat, pelvic organs, and, in rare cases, conjunctiva, as well as the cervix in women. Colloquially referred to as the ‘clap’ or the ‘drip,’ the incubation period is usually 2 to 5 days but may take up to 30 days to become visible. Gonorrhea is symptomatic in approximately 50% of infected individuals and possible symptoms include painful urination, abnormal discharge from the penis or vagina, genital itching or bleeding, and, in rare cases, sore throat or conjunctivitis. In women, symptoms may also include lower abdominal pain, fever, general tiredness, swollen and painful Bartholin glands (opening of the vaginal area), and painful sexual intercourse. In men, symptoms can include discharge from the penis that is at first clear or milky and then yellow, creamy, excessive, and sometimes blood tinged. If the infection disseminates to sites other than the genitals, possible symptoms include joint pain, arthritis, and inflamed tendons.

Left untreated, gonorrhea may cause complications to the female reproductive system, including pelvic inflammatory disease (PID), which can result in an increased risk of infertility (a danger that increases with subsequent episodes), tubo-ovarian abscess, inflammation of the Bartholin glands, ectopic (tubal) pregnancy, chronic pelvic pain, and, in rare occurrences, Fitz-Hugh-Curtis syndrome (inflammation of the liver). Left untreated in men, complications can include urethritis (infection of the urethra), epididymitis (inflammation and infection of epididymis), prostatitis, and infertility. If gonorrhea is not treated, complications may arise from disseminated gonococcal infection and include fever, cellulites, sepsis, arthritis, endocarditis (inflammation of the heart valves and the chambers of the heart), and meningitis.

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