Medically reviewed by Katrina Carter, DPT Key Takeaways Voluntary muscles can be controlled by the person, like muscles in your neck and legs. Involuntary muscles work without you thinking about it, ...

Primary lateral sclerosis (PLS) is a motor neuron disease variation of ALS (amyotrophic lateral sclerosis) but far more rare. PLS refers to patients who seem to have disruptions with only upper motor ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

Locked-in syndrome is a neurological condition that causes paralysis of all voluntary muscles except those controlling the eyes. A person cannot speak or move but is conscious. This article explores ...

Amyotrophic Lateral Sclerosis, commonly known as ALS, is an incurable neurodegenerative disease that affects all voluntary muscles in the body leading to paralysis and breathing difficulties. Eye ...

Muscle function loss occurs when your muscles don’t work or move normally. Complete muscle function loss, or paralysis, involves being unable to contract your muscles normally. If your muscles lose ...

Amyotrophic lateral sclerosis (ALS) is probably one of the most devastating diagnoses that we should all hope to never hear. Also known as Lou Gehrig's disease, or motor neuron disease, ALS is a prog ...

Doctors may use a range of tests to diagnose myasthenia gravis (MG), including blood tests, nerve conduction tests, and imaging tests. MG is a chronic autoimmune disease that affects the voluntary ...

Neuromuscular diseases are conditions that affect your nerve and muscle function. Neuromuscular disorders affect your peripheral nerves—the nerves outside your brain and spinal cord. Types of ...