Doctor can check: If it's a thyroid problem, then the car trip would just be a coincidence. However, people who sit a lot on any kind of trip may get blood clots. The doctor will likely check to see if there is a blood clot that might be causing neck swelling. A tumor can also block blood flow, and cause neck swelling (and the car trip would again be a coincidence). It's time to see the doctor now, and not wait.
Answered 2/3/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
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