Sexually transmitted diseases (STDs) or sexually transmitted infections (STIs) are illnesses that are spread through sexual contact. These infections can be caused by bacteria, viruses, or parasites, and can be transmitted through body fluids such as blood, semen, or vaginal fluids. STIs can be contracted through vaginal intercourse, anal sex, oral sex, or skin-to-skin contact. Common STIs caused by viruses include hepatitis B, herpes, HIV, and human papillomavirus (HPV).
Bacterial STIs include chlamydia, gonorrhea and syphilis. When doctors or nurses ask about your sexual history, they are trying to determine if you have done anything since your last checkup that could have exposed you to an STD or pregnancy. Condoms are a great way to protect yourself from STDs that are transmitted through body fluids, such as semen or vaginal secretions. However, it is important to remember that some STDs can be transmitted through intimate skin-to-skin contact, even when there is no penetration.
It is also important to note that STD stands for sexually transmitted disease, and it is a disease that is spread through sexual behavior. Many people mistakenly believe that if they haven't had vaginal sex they are still virgins and cannot contract an STD. This is not true; any type of sexual contact can put you at risk for an STD.
