Can bad posture cause stress, stomach pain, and shortness of breath?

Is it actually plausible that issues with the cervical spine could lead to difficulty swallowing saliva... I mean, has anyone else here dealt with similar symptoms or perhaps noticed some strange connections there?

My neighbor was clearly struggling to swallow—even just tilting his head—all because of an enlarged thyroid.

Trying to diagnose why you’re having trouble swallowing by reading forum posts (or worse, Googling it) will only lead you down a rabbit hole of anxiety.
Just go see a doctor at your local clinic to find out exactly what's going on.