Final answer:
Nancy Mairs has multiple sclerosis.
Step-by-step explanation:
The condition that Nancy Mairs has is multiple sclerosis.
Multiple sclerosis (MS) is a chronic autoimmune disease that affects the central nervous system (CNS). It occurs when the immune system mistakenly attacks the protective covering of nerve fibers, causing communication problems between the brain and the rest of the body.
Some common symptoms of MS include fatigue, difficulty walking, muscle weakness, numbness or tingling, and problems with coordination and balance.