OMG, after 20 years, No Way!!!!! Can the mechanisms behind TOS be cure in 4 days. The expense to, run, keep your cash. There is really nothing that doc is going to do you can't find with your own treatments. Know what causes your flares and reduces the pain.

Biofeedback back can be learned with medical coverage for psych that deals with chronic pain patients, or a great PT that massages, heat, Biofreeze ultra sound, TENs, being proactive to avoid flares of type A, personalities.

Many people that end up with TOS. Have an injury or anomalies. If the injury does not go away in a few months, such as a whiplash, then it is a long term issue.

Half of society has short fibrous bands that hold up the neck, repetitive activities, an injury, extra cervical ribs, larger ribs, many things could be in place only to be ignited from TOS incited flare.

The spasms of the muscles are trying to protect nerves. They are creating splints. That is why there are compressing tight spasms. Some things help loosen them, but the nerve is STILL flared!

Some meds, take away the activity that causes flares, massage, hot tub, Biofreeze, the modifications to your life help reduce or put into remission the flares. I use Valium for spasms as needed, pain meds as needed, trigger points, but more so....my maintenance plan is cervical epidural in the C/5 hump on the back of my neck.

The daily control then is the traps, the butcher knife in my back, and hands/wrists.

I have heard in our family twice from docs with statements to fix or cure...they have no idea what they are dealing with. This is not a sprain or typical spasm! They can do, and did so much harm it was breath taking looking back on it. But, when you hurt so bad, you pay anything to feel better.

I saw one on Judge Judy the other day. The woman signed the contract, he took the money, no where in the contract did he "state" cure. Promise to feel better, then you do have a response noted in the office records you left happy and feeling better...contract fulfilled. It is not cure, your best friend could rub your neck and shoulders apply a heating pad and you will feel better.

My dd was sent to PT early in her injury....as the top PT massaged her, he could feel the spasms travel, across to the other side, down her neck and her arms pulled up in pain to her chest.

Instantly she worsened never to even get to the point prior to that visit. THAT is how a typical PT can manage to escalate you, not understanding the mechanisms and feel your body responding, TOS specialist treat you with kid gloves, not promises.
Would you take a chance to lose that money and feel more pain?

Run, go to plan B. a physiatrist may be the best doc for now until you know if you are getting better or worse.
I do hope you find help, but concerning is the promises or statements said.

Sorry for typos, hands are cringing after holiday a activities took a toll.