Multiple sclerosis is a type of disease where myelin sheath of
nerve cells in the brain and spinal cord are damaged. This damage
disrupts the ability of parts of the nervous system to transmit
signals, resulting in a range of signs and symptoms, including
physical, mental, and sometimes psychiatric problems. Specific
symptoms can include double vision, blindness in one eye, muscle
weakness, and trouble with sensation or coordination.
If Nerve a is a neuron in Patient A’s and nerve B...