M
| Term | Definition |
|---|---|
| Mexiletine |
a drug used to treat myotonia (delayed muscle relaxation after contraction) in muscle diseases such as myotonic dystrophy and myotonia congenital (brand name is Mexitil) |
| Modafinil |
a drug is used to treat excessive daytime sleepiness (brand name is Provigil) |
| Motility |
the power of spontaneous movement |
| Multisystemic disorder |
a disease that can affect many different organs and systems in the body |
| Mutation |
as used on this website, a change in the normal chemistry of a gene |
| Myopathy |
muscle weakness |
| Myotonia |
the inability of contracted muscles to relax on command; or, a special kind of muscle stiffness |
