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.
Medical Definition of sexually transmitted disease. : any of various diseases or infections that can be transmitted by direct sexual contact including some (as syphilis, gonorrhea, chlamydia, and genital herpes) chiefly spread by sexual means and others (as hepatitis B and AIDS) often contracted by nonsexual meansâcalled also STD.