But many people get cold sores that come back. Cold sores ... You might also have red or swollen gums, swollen glands in your neck, fever, or muscle aches. You catch HSV when you come into ...

Causes of a sore throat on one side includes the flu ... can cause lymph nodes on one side of your neck to swell, triggering pain on that side of the throat, says Dr. Sabina Rebis, a primary ...