Motor neurone disease
Motor neurone disease (MND), also known as amyotrophic lateral sclerosis (ALS), affects movement by attacking the nerves connecting the spinal cord to the muscles. It can strike anyone at any age. The early symptoms are slurred speech and stumbling. As the nerves gradually waste away, people with the condition eventually lose all control over their voluntary movements, even processes like swallowing and eye movements, although it never affects mental ability.