causes of sti
Sexually transmitted diseases (STDs) are very common. Sexually transmitted diseases (STDs) are caused by infections that are passed from one person to another during sexual contact. These infections often do not cause any symptoms. Medically, infections are only called diseases when they cause symptoms. But itâs very common for people to use the terms sexually transmitted diseases or STDs, even when there are no signs of disease. There are many kinds of sexually transmitted diseases and infections.