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.
a primary care doctor in a different state gave me a referral for PT, but it was back in early August (exactly 6 months ago this Friday), so I just wanted to make sure I could still use the referral order. Click to expand... It's not an order or a prescription. It's a referral. Call up a PT clinic and ask them. Doubt law comes into play, more like does your insurance company still consider it valid from that long ago. A PT clinic will figure that out for you plus any laws that come into play plus any policies they have for out of state referrals and the time discrepancy.