It is very possibly discogenic and comes from poor seated posture at your desk job.
Get this book:
Treat Your Own Back
It is written by Robin McKenzie, the most brilliant physical therapist of all time and the inventor of McKenzie exercises.
Read the book -- it is quite short -- and do the exercises in it exactly as he describes. In addition, pay close attention to what he says about seated posture since that is very possibly the source of your problems.
Get this book:
Treat Your Own Back
It is written by Robin McKenzie, the most brilliant physical therapist of all time and the inventor of McKenzie exercises.
Read the book -- it is quite short -- and do the exercises in it exactly as he describes. In addition, pay close attention to what he says about seated posture since that is very possibly the source of your problems.
same old shit, sixes and sevens Shaft...