Are diseases that are passed from one person to another through sexual contact. Some STD's like gonorrhoeae infect the genital and reproductive organs. Others like HIV, syphilis and Hepatitis B lead to other body symptoms. Most STD's can be cured if treated on time but with some STD's may have no signs or symptoms. If these go untreated they can cause painful symptoms, serious infections and even permanent damage.

Symptoms usually appear within two days to three weeks after exposure but the infection may present as having no symptoms both in men and women. Men can experience a mild to severe discomfort in either their penis or rectum from with a thick, yellow-green mucous-like discharge. Other symptoms may include a burning sensation when urinating, swelling of the penile head, lower abdominal pain or discomfort a low-grade fever. Although women can experience the yellow-green discharge from the vagina or mild to severe lower abdominal cramps and fever, very often women have no symptoms whatsoever and thus can carry the bacteria for weeks, months or even years without knowledge of their infection.