Sexually transmitted diseases (STDs) are caused by sexually transmitted infections (STIs). They are spread mainly by sexual contact. STIs are caused by bacteria, viruses or parasites. A …

Apr 16, 2025 · Human papillomavirus (HPV) is thought to be the most common STI overall. Studies suggest that around three-quarters of sexually active people acquire this incurable …

A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is spread by sexual activity, …

Mar 25, 2024 · A sexually transmitted disease (STD) develops because of an STI and the term implies that the infection has led to some symptom of disease. People sometimes use the …

Sep 18, 2025 · Some sexually transmitted infections (STIs) can lead to pelvic inflammatory disease (PID), anal or genital warts, and certain cancers. All STDs are caused by an STI. STIs …

Mar 3, 2024 · Chlamydia is the most commonly reported STD in the U.S. It's spread mostly by vaginal or anal sex, but you can get it through oral sex, too. Sometimes you'll notice an odd …

A common STD that infects your mouth and/or genitals. Causes blistery sores. There’s no cure, but symptoms are treatable.

Feb 3, 2023 · Sexually transmitted infections (STI) are infections or conditions that you can get from any kind of sexual activity involving your mouth, anus, vagina or penis. Another common …

Sep 10, 2025 · STIs have a direct impact on sexual and reproductive health through stigmatization, infertility, cancers and pregnancy complications and can increase the risk of …

Mar 12, 2024 · Learn about common and possible STD symptoms and how serious they might be. Sexually transmitted diseases are infections spread mainly by contact with genitals or bodily …