As I have suffered with disorder in my nervous system (with atypical facial pain and adverse effects of surgeries to “help” me), I have become much more conscious of a part of the body’s working that I hadn’t given much thought to before.  Every day I experience a degree of numbness in parts of my body where I should have more feeling, and I endure pain in parts of my body without a corresponding cause (like a fire alarm going off without a fire).