 [ Symptoms ] can you have both a sinus infection and strep throat  my doctor told me i have a severe sinus infection but could also have strep but since he treated the infection with antibotics he said there was no reason to check for strep as the treatment for strep is the same i have a severe sore throat have a hard time swallowing have a red rash on the back of my throat and i have a fever is it possible to have both at the same time my sinus were draining down the back of my throat and i did not know it until 4 days after my sore throat started [ Disease ] it is entirely possible to have multiple infections at the same time but your doctor is right antibiotics should clear any bacterial infections right up the sore throat is likely being caused by post nasal drip from your sinus infection if it is strep you should see small white patches on your tonsils and it is extremely painful if after you finish your round of antibiotics you still have a serious sore throat then you should go back to the doctor for more tests good luck