Electrical Myography (EMG)

Electrical Myography (EMG) measures how fast and how well that nerves can send electrical signals throughout the body. It is often performed when patients complain of unexplained muscle weakness. The diagnostic procedure helps distinguish between muscle weakness due to nerve disorders and muscle conditions in which the problem begins in the muscle.

Amyotrophic lateral sclerosis

Amyotrophic lateral sclerosis (ALS), sometimes called Lou Gehrig's disease, is a rapidly progressive neurological disease that attacks the nerve cells responsible for controlling voluntary muscles, such as those in the arms, legs, and face.

ALS causes weakness with a wide range of disabilities. Early signs and symptoms include: