Originally Posted by Carbonfiberboy

Yes, nerve damage. Do that much and it becomes permanent damage. Never have pins and needles anywhere!

The Numb Hands post.

Always wear cycling gloves which have the padding arranged for ulnar nerve protection. Bontrager Race Gel gloves are my faves.

You might also try moving your saddle back to reduce the weight on your hands. Check out the reach being used by the women in that Numb Hands post.