DEAR MAYO CLINIC: I’ve been experiencing swollen joints and pain in my shoulders, wrists and fingers. Tests for rheumatoid arthritis were negative. I took a strep test of my blood, and the doctor said ...

Although a painful sore throat could indicate strep throat, you may actually have another condition, like the flu or tonsillitis. Strep throat is an infection caused by the group A Streptococcus ...

A jump in the number of people with serious illness caused by group A Streptococcus—also referred to as Streptococcus pyogenes or Strep A—has made headlines recently. There has also been a higher than ...

Strep throat is a common throat infection that often causes a sore throat, fever and trouble swallowing. It tends to come on quickly and may feel worse than a typical cold. While strep throat is most ...