Though in a spine-tingling tribute to evolution’s cleverness, the first digital designs of the bones surrounding the sinus cavity actually bore a striking resemblance to an uninjured human skull.

Writers of the most spine-tingling horror stories and thrillers create a feeling of suspense and of dread, and one online thread proves it only takes a few words to give readers the chills.

Many spinal conditions, including a lumbar herniated disc, can cause inflammation or pressure on the nerve roots leading out of the spine, resulting in pain, tingling, or numbness along those nerves.