Amyotrophic lateral sclerosis (ALS) is a progressive disease in which nerve cells in the brain and spinal cord, called motor neurons, get weak and die. Motor neurons are the cells that the brain uses to tell the muscles to move.

It is called progressive, because the damage to the motor neurons gets worse. The muscles get fewer messages from the brain and get stiff from not moving. Eventually, the muscles become paralyzed.

ALS, also called Lou Gehrig's disease, does not affect other cells in the brain. People with this disease can still think and, with the help of technology, can often communicate well with others.

All sites submitted to this category must be designed for use by kids / teens and provide information on or about amyotrophic lateral sclerosis.

Websites designed for parents or teachers, or to sell products or services, will not be accepted.

English-only sites. Sites in other languages should be submitted to the appropriate category in /International.