Central pontine myelinolysis (CPM) is a neurological disorder
that affects the brain. Pontine refers to the stem of the brain,
called the pons. Myelinolysis means that the myelin—a covering
that protects the pontine nerve cells—is being destroyed. The
destruction of myelin is generally not spontaneous, according to
the National Institutes of Health (NIH). CPM usually happens as
the result of another illness or medical condition. People who
have central pontine myelinolysis cannot be cured, but their
symptoms can be treated. The nerve damage can become chronic and
may lead to permanent disabilities. Some people will need
assistance dressing, feeding themselves, and accomplishing other
routine tasks. In rare cases, CPM can lead to locked in
syndrome, coma, or even death. Locked in syndrome is a condition
in which all mobility and muscle control is lost. People with
locked in syndrome can move only their eyes. The most common
cause of CPM is a rapid increase in blood sodium levels. Sodium
is an electrolyte miner