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.
Do you need a doctor's referral for an appointment? Some specialty areas at Mayo require a doctor's referral, and some do not. Most insurance plans require a referral from a plan doctor in order to get access to Mayo Clinic. You should check with your insurance company or your doctor prior to seeking care at Mayo.
Telephone consultation with Mayo Clinic physicians. Physicians in most medical and surgical specialties at Mayo Clinic are available to assist you 24 hours a day, seven days a week. Call the Referring Provider Office to arrange. See the list of medical departments and centers at each Mayo Clinic campus.