Strep throat is pretty common and usually goes away by itself after a couple of days. Strep throat is when you have a very severe sore throat, and it is usually caused by a bacterial infection. The name "strep" is derived from the word "Streptococcus Pyogenes," which is the infection that causes the ailment. The crazy thing about bacteria-induced infection is that it can come at any time, which means that you can't exactly ...