Thanks for the reply,

1) I am 21 years old.

2) No unfortunately not, Its something i've never been that clear upon, although I know there is an official term for it. I went through some therapy for it when I was young but that stopped when I went to secondary school.

3) There is a small area of my hand that is numb.

4) I'm currently at university but playing guitar could become part of my job, as I hope to go into music production as a career.

5) I have started going to the gym in the last year. I do some weight lifting and cardio.

....

May also be helpful:

I saw a physio around four years ago and he said that the shoulder did grow and form properly.

Thanks