of the Nervous System
Amyotrophic Lateral Sclerosis (ALS)
This disease causes the loss of function in nerve cells. This leads to cramping muscles, loss of control of arms and legs, clumsiness, and slurred speech. As the disorder progresses it can lead to difficulties speaking and swallowing, paralysis. There is no cure for ALS.
Bell's palsy is an unexplained episode of facial muscle weakness or paralysis. It generally worsens over the first three to five days and last from two weeks to six months. It can occur at any age but is most common in pregnant women, people who have diabetes, influenza, a cold, or another upper respiratory ailment. It occurs equally in men and women but is less common in individuals who are younger than fifteen and older than sixty. There is no cure for Bell's palsy.
Polio is a disease that had a major impact from the late 1800's to the mid 1900's. It is a very contagious viral illness that can, but rarely, affect and damage the nervous system. In the paralytic strain it can cause muscle paralysis and cause trouble in the respiratory system. Depending on the severity of the illness and how the illness attacks the nerves, it can possibly lead to death.