You also may be gripping the bars to tightly and not noticing it. Try to be cognizant of how tightly you are gripping the bars. It should be a light touch for most situations while riding.
Try different types of gloves if you go that route. Some may exacerbate the problem with padding that is to thick or thin, or possibly in the wrong places.
I have ergon grips on my hardtail and love them. They help keep the wrist in a neutral position and are overall more comfortable.