What Could Constant Numbness Of Neck Suggest?

Doctor? My neck has been numb for years and has only gotten worse over a period of 5 years tried every anti inflamitory and pain killer from my doc. and 100% numbness not a pain though... without details I took 90 mg. of adderall and one hour later fine!!!! just said that today to my doctor and he said no way!! 2 yrs. ago C5 and C6 mild compression on m.r.i. (was numb before that happend) do you need more info??? answer 3rd. party if you would guess more open about that person..... thank you!!!