What is MS?

The National Multiple Sclerosis Society defines MS as: an autoimmune disease. The body's own defense system attacks myelin, the fatty substance that surrounds and protects the nerve fibers of the brain, optic nerves, and spinal cord (the central nervous system). The damaged myelin may form scar tissue (sclerosis). Often the nerve fiber is also damaged. When any part of the myelin sheath or nerve fiber is damaged or destroyed, nerve impulses to and from the brain are distorted or interrupted, producing the various symptoms of MS.

But what is MS really? Each person diagnosed with multiple sclerosis would answer differently.

MS can mean that you can't enjoy a summer's day, as the heat exacerbates your symptoms.
MS can mean that you can't drive anymore, as your vision is not what it once was.
MS can mean that you can't feel your legs, can't ever be too far from a bathroom, can't carry your child in your arms, can't work an 8 hour day.

What does MS mean to you? Please post your experiences to help others understand what MS really is.