Of the 28 causes of Stuttering that we have listed, we have the following prevalence/incidence information: 1  1 causes are very common diseases. 2  4 causes are common diseases. 3  1 causes are uncommon diseases. 4  0 causes are rare diseases. 5  0 causes are very rare diseases. 6  27 causes have no prevalence information.
Sexually Transmitted Diseases (STDs): Overview. Sexually transmitted diseases (STDs), also known as sexually transmitted infections (STIs), are typically caused by bacteria or viruses and passed from person to person during sexual contact with the penis, vagina, rectum, or mouth.
What Are STDs? STDs are sexually transmitted diseases. This means they are most often -- but not exclusively -- spread by sexual intercourse. HIV, chlamydia, genital herpes, genital warts, gonorrhea, some forms of hepatitis, syphilis, and trichomoniasis are STDs. STDs used to be called venereal diseases or VD.