To identify which kind of nerve was connected to the bumps, she injected a dye into the nerve itself. As the dye was absorbed slowly by the nerve cells, it left a telltale trail that enabled ...

A single inch of your skin has about 1,000 nerve endings, 650 sweat glands ... Tell your doctor if you notice things like new bumps or spots, one that change in size, shape, or color, or scarred ...

The structure is similar to that in a fingertip, where signals from a matrix of bumps just under the skin, called papillae and each with a nerve ending, are processed to produce a sensation of touch.