Amyotrophic Lateral Sclerosis (ALS) is a rare neurological disease that affects nerve cells in the brain and spinal cord, specifically those that control voluntary muscle movements. Such movements include; chewing, walking, breathing, & talking. The progressive deterioration of these nerve cells causes muscle weakness, paralysis, and ultimately, respiratory failure. Though there are drugs that can slow its progression, the average life expectancy after an ALS diagnosis is 2-5 years. ALS is always fatal.
For more information on ALS, and to find out how you can support the cause, check out these resources.