I have quite a bad lower back thanks to a massive crash being a jump Guinea Pig when I was 17. This still affects me in day to day life as I am constantly in pain from it, I can live with that tho.
What I am having trouble with is when climbing on my bike. I feel that I give up on long climbs because my back hurts rather than my legs dieing. Would higher bars help or would the result in me just wheeling and falling off the back?