My action is very low at the first fret, and gradually increases.

My open string buzzes at the first fret.

Shouldnt the string be the same height along the entire fretboard??

Does my truss rod need adjustment?
Ummm. If your not sure, take it to a tech. But buzzing on the first fret makes me think of nut height issues. What kind of guitar do you have?
Quote by Spl!nTeRgu!tAr
im getting the C-1 Hellraiser Baritone and replacing the EMG 81 with my Zakk Wylde EMG 81

****in great dude