Just moved back to the states after 6 years in Japan. While there, a neurologist suggested trying TENS to reduce a tingling sensation in my jaw and forearms since an MRI had ruled out MS. I went to a TENS place where a seemingly untrained technician put a high energy TENS unit on the front-sides of my neck. The left-front of my neck shaked intensely with the electricity. The right-front had almost no response. After leaving the building, my head had a strong pull to the right. I returned the next week to see if they could fix it, and the only person who spoke English was the same untrained technician who said he might be able to fix it by doing the same thing. I didn't know better and let him try. No luck. Returned a third time and asked for another opinion: the head of the place said he had never seen a similar issue before, and he suggested it might be fixed if I continued to have high energy TENS on the front of my neck. For the next 1.5 years my neck has pulled to the right, needing a hand on my jaw to counteract the pull and reduce neck muscle strain. In the last couple months, the issue seems to have gotten worse with swallowing feeling like it only happens on the left side of my neck. Back in the states now, I'm looking up TENS online and find every site saying the same thing: "Never put TENS on the front of your neck." -- but I'm having trouble finding anything suggesting how to recover after it's already happened. I saw my physician who hadn't heard of this issue before. Also saw a neurologist last week who did a variety of checks and concluded my "neck muscles are normal and swallowing is normal", advising me to do nothing about it. Swallowing sure doesn't feel normal, and I'm concerned since it's gradually getting worse over time. Apologies if this isn't the appropriate forum to ask this question, but I saw a number of posts here from people who are highly knowledgeable about TENS and thought someone might be able to suggest something. I'm seeing a physical therapist now who taught me to stretch my SCM muscle on my neck, but it feels like some of the issue might be deeper. Not sure what to tell my physician or if I should try things like acupuncture. Appreciate any suggestions.
EDIT: upon further reading, it appears it was an EMS (electrical muscle stimulation) device on my neck which caused the contractions, not TENS. Many sites advise against using EMS on the front of the neck as well, but I can't find anything on how to reverse the damage after the fact. Appreciate any guidance.