Glossary
Short explanations of common terms.
EMG
Electromyography — a test that evaluates electrical activity in muscles.
Fasciculations
Small involuntary muscle twitches.
Spasticity
Increased muscle tone and stiffness.
Atrophy
Loss of muscle bulk.
NIV
Non-invasive ventilation — breathing support delivered by mask.
PEG
A feeding tube placed through the abdominal wall into the stomach when needed.
ALSFRS-R
A scale used to assess function in ALS.
SOD1
A gene associated with a small subset of ALS cases.