Back in the 1920s it was pretty rare to find women in the medical field. In fact, female students at Baylor University College of Medicine were told they would need to score grades 10 points higher than male students in order to graduate with "equal standing."

But that didn't stop Ruth Jackson from graduating from Baylor in 1928. Eighth in her class and against her father's wishes. And she went on to become the first female member of the American Academy of Orthopaedic Surgeons.

Dr. Jackson had a special interest in injuries of the cervical spine. She suffered with significant pain herself following an automobile accident in 1936, and in 1956 she published her findings from the collected data on over 15,000 patients in her acclaimed and authoritative book, The Cervical Syndrome.

Dr. Jackson's Cervical Syndrome is a gold-mine of information when it comes to understanding the neurological changes that trigger chronic headaches (and worse: migraines). More important though, is how this information has helped us understand how to correct the root cause of chronic headaches and migraines.