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.
Appointments & care. At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. To help diagnose OCD, your doctor or mental health provider may do exams and tests, including: 1  Physical exam.2  This may be done to help rule out other problems that could be causing your symptoms and to check for any related complications.ppointments & care. At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. To help diagnose OCD, your doctor or mental health provider may do exams and tests, including: 1  Physical exam.