GENITAL HERPES: Itching or tingling of the genital region, followed by very painful sores that last a few days to a few weeks; may also involve headache and fever. Outbreaks are usually recurrent and painful; other parts of the body may be affected. No known cure; treatment with an antiviral drug makes outbreaks less severe.
CHLAMYDIA: Possible yellowish vaginal discharge, painful urination, lower abdominal pain; spotting after sex or bleeding between periods; may have no symptoms at all. If untreated, may cause Pelvic Inflammatory Disease (PID), or scarred fallopian tubes, which may result in ectopic (tubal) pregnancy or infertility. Antibiotics.
GONORRHEA: Possible vaginal discharge and burning or pain on urination; may be no symptoms at all. Same as Chlamydia. Antibiotics.
SYPHILIS: Stage 1: possibly painless sore on infection site and swollen glands. Stage 2: skin rash on hands or soles of feet lasting several months. Stage 3: Heart, nervous system, and other internal organs may be affected. If untreated, may cause health problems involving internal organs, and sometimes eventually death. Antibiotics.
HIV/AIDS: Internal infection with HIV may have no symptoms. Eventually various infections develop. Within 3-5 years of infection without antiretroviral drugs, opportunistic infections may occur. If left untreated, will reduce life expectancy. No known cure, drug treatment improves survival rate.