[mahy-uh-toh-nee-uh] /ˌmaɪ əˈtoʊ ni ə/
tonic muscle spasm or muscular rigidity.
lack of muscle tone, frequently including muscle spasm or rigidity Also called amyotonia
myotonia my·o·to·ni·a (mī’ə-tō’nē-ə)
Delayed relaxation of a muscle after an initial contraction.
my’o·ton’ic (-tŏn’ĭk) adj.
- Myotonia atrophica
myotonia atrophica myotonia a·troph·i·ca (ə-trŏf’ĭ-kə) n. See myotonic dystrophy.
- Myotonia congenita
myotonia congenita myotonia con·gen·i·ta (kən-jěn’ĭ-tə) n. A hereditary disease characterized by tonic spasm or temporary rigidity of certain muscles after an attempt has been made to move them. Also called Thomsen’s disease.
- Myotonic dystrophy
myotonic dystrophy n. A chronic, slowly progressing, inherited disease that usually manifests its first symptoms when individuals reach their 30s, characterized by a wasting of the muscles, failing vision, opacity of the lens of the eyes, ptosis, slurred speech, and general muscular weakness. Also called myotonia atrophica, Steinert’s disease.
myotonoid my·ot·o·noid (mī-ŏt’n-oid’) adj. Of or relating to a muscular reaction characterized by slow contraction or relaxation.