It is important to know that in most cases, STIs (sexually transmitted infections) do not cause any outwardly noticeable symptoms. It is common for a STI to go unnoticed for years before exhibiting any noticeable symptoms; whereas internally, it may be wreaking havoc on one’s reproductive system and/or other organs. Infections are only called diseases when they cause symptoms. This is why STDs are also referred to as “sexually transmitted infections.”
Nearly half of all sexually active people will be infected with some kind of STI during their lifetime.