Strep throat is a term used to loosely describe any kind of sore throat, but to a doctor it has an exact meaning: a strep throat is an infection caused by a streptococcus bacterium. Once a sore throat is diagnosed as streat throat is diagnosed as strelp throat, it is treated with antibiotics. These drugs are needed to clear up the infection and to prevent the possible dangerous consequences of streap throat such as rheumatic fever and kidney disease. A sore throat, of course, may develop for a variety of other reasons. The most common of these are viral infections, which can cause sore throats that are more painful than bacterial infections. Sometimes a sore throat is the acoompanying symptom of another problem such as allergy, a cold, influenza, brochitis or measles. An irritated throat can also be the price you pay for smoking or drinking too much. Finally, a sore throat may indicate the presence of serious illness such as cancer or leukemia.