Of or pertaining to James the First, of England, or of his reign or times; especially, pertaining to a style of architecture and decoration popular in the time of James I.; as, Jacobean writers. Etymology: From L. Jacobus James.
ALS is a progressive, degenerative disease of the nervous system. It is one of a group of diseases, called motor neuron diseases (MND), in which specialized nerve cells that control movement of the voluntary muscles gradually cease functioning and die. Fasciculation is a sign of muscle irritability, as the normal action of the lower motor neuron on the muscle is impaired. 2  The sole involvement of lower motor neurons can be seen in a form of ALS called progressive muscular atrophy.
The first type is known as disuse atrophy while the second type is referred to as neurogenic atrophy. The symptoms of both types of muscle atrophy are the same, but each has different causes and dissimilar treatment methods. Diagnosis of the type of muscle atrophy is critical to the treatment of the condition, as the treatment methods differ greatly. 2  Doctors may recommend different types of exercises with varying degrees of intensity to correct the abnormalities associated with disuse muscle atrophy.