While you don't need to see the doctor every time a sore throat pops up, some potential strep throat symptoms should cause you to make an appointment right away. If your sore throat is accompanied by swollen lymph nodes, a rash, difficulty swallowing or breathing, a high fever, or a fever lasting more than 48 hours, call the doctor for an appointment. You should also talk to your doctor if your sore throat lasts longer than 48 hours. Bring the doctor a thorough list of your symptoms and let them know that you suspect strep might be to blame. Your doctor will usually check for some of the most telling signs of the disease.  Expect your doctor to take your temperature. Also expect your doctor to look inside your throat with a light. He or she will most likely want to check for swollen tonsils, a red bumpy tongue rash, or white or yellow spots in the back of the throat. This protocol is basically an organized way for your doctor to assess your symptoms. For adults, your doctor may use what is known as a Modified Centor Clinical Prediction Rule in order to empirically indicate how likely it is that you have a group A Streptococcal infection. This is simply a list of criteria that the doctor checks for to determine whether (and how) you should be treated for strep throat.  The doctor will tally points, positive or negative, for signs and symptoms: +1 point for milky, white spots on the tonsils (tonsillar exudates), +1 point for tender lymph nodes (tender anterior chain cervical adenopathy), +1 point for a history of recent fever, +1 point for less than 15 years of age, +0 point for an age between 15-45 years old, -1 point for being greater than 45 years old, and -1 point for a cough. If you score 3-4 points, then there is a positive predictive value (PPV) of roughly 80% that you have a group A streptococcal infection. Basically, you are considered positive for strep. This infection should be treated with antibiotics and your doctor will prescribe the proper regimen. The Centor criteria has not proven effective in...

TL;DR in Vietnamese:
Biết khi nào phải đi khám bệnh. Cho bác sĩ biết về lo lắng của bạn. Bác sĩ duyệt qua một quy trình chẩn đoán lâm sàng. Yêu cầu bác sĩ xét nghiệm liên cầu khuẩn nhanh. Yêu cầu bác sĩ cấy khuẩn cổ họng. Tìm hiểu về các lựa chọn xét nghiệm khác. Uống thuốc kháng sinh theo chỉ định của bác sĩ. Nghỉ ngơi trong thời gian dùng thuốc kháng sinh. Tái khám nếu cần.