[QUOTE=Jo*mar;1274309]Sounds very familiar..
Hows your head/neck/shoulder posture? forward of body , hunched or rolled forward.. all those close down the chest where nerves & blood need to flow..

Choking & collar bone sensation = look for top rib mobilisations..
armpit pain - look for pec minor & lymph drainage massage

We have posts on those so our search can find those or web search , also videos on you tube cover it too.

Expert PT or expert chiropractic care and lots of self care & limiting activities that aggravate symptoms can help to reverse it.

Do you know what brought it on?
desk work/repetitive, injury?

Unless your dr is knowledgeable on repetitive motion/TOS type issues, you may not get clear diagnosis.. Some say they are, but some have a bias if testing or imaging doesn't show a clear cut cause..



Thanks so much for your reply, appreciated!
My posture is definitely not the best, and I've been trying to improve it.
My job was repetitive, and a desk job as well.
My Dr is not at all familiar with TOS and has referred me to orthopaedics.
There is only one TOS specialist in the UK and he is unfortunately private and a long way from me, but I definitely would save up and make the journey, he's very well rated and diagnoses to International standards.
Just getting a diagnosis instead of imagining all sorts of things would be good.

Thanks again