Most sore throats are caused by colds, the flu, coxsackie virus or mono (mononucleosis). Bacteria that can cause pharyngitis in some cases: 1  Strep throat is caused by group A streptococcus.  Less commonly, bacterial diseases such as gonorrhea and chlamydia can cause sore throat.
1 Use our online referral service when it's convenient for you, or gain electronic access to patient appointment times and subsequent clinical notes and test results.  Expertise. Mayo Clinic has tertiary and quaternary expertise found in few other medical centers, including novel treatment options and clinical trials.
I would call the Mayo Clinic or call your insurance company. Your ins. co. should be able to tell you if they will require a referral. Mayo Clinic will also be able to tell you all the requirements for getting in there. I think you can also have them just do a records review and second opinion without having to actually go there if you wanted to do that.