Firstly, thank you so much for your replies, Laxmi & Rajul! i've taken too long to reply...

Laxmi: re. the pain, the pain is constant, non-radiating in nature, posteriorly over the neck & shoulders (bilaterally) & it does get aggravated with movements including laboured breathing. He describes pain as "more severe than any joint pain"; due to language barrier he has not been able to be more specific about description of pain.
Rx: he has used heat packs & TENS but to no avail.
Have added an abdominal binder since it aids his laboured breathing; also, isometric exs. for the neck to increase strength of cervical ms.

Rajul: Yes. I'm still looking after this patient. I go for a once a week physio visit and a home care nurse looks after him, along with relatives and performs exs. &/ other suggestions as recommended, on a daily basis. I would be more than happy to hear from you.

Q: is the pain, a result of hypersensitisation at the level of injury?

Thanks again, for your replies!