The research is fascinating.  Here is one of the systems I did not
 know about before Chloe's bulging disc was discovered.

                        Somotasensory system

This is the system that informs us about objects in the external
environment through touch. It also lets the position of the body
 parts(proprioception) through stimulation of muscles and joints.
 Another action of this system is to monitor the temperature of
the body, external objects and environment. This system tells
Chloe what is painful, itchy and tickling stimuli. All of these
messages are sent along different anatomical pathways
depending on information.

In the book I share how Chloe is working through several
 issues she has with this system.