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.
1 Before contacting us you will need to arrange a referral from either your GP or consultant. 2  It is important we understand your medical history before performing any tests. 3  When you call us with your referral, we will arrange an appointment at a time thatâs convenient to you. A specialist member of staff will conduct your test or scan at the hospital. 2  Your GP or consultant will then discuss the results with you and offer further advice and treatment if needed.