a disease of impaired transmission of motor nerve impulses, characterized by episodic muscle weakness and easy fatigability, especially of the face, tongue, neck, and respiratory muscles: caused by autoimmune destruction of acetylcholine receptors.
a chronic progressive disease in which the muscles, esp those of the head and face, become weak and easily fatigued
myasthenia gravis myasthenia grav·is (grāv’ĭs)
A disease characterized by progressive fatigue and generalized weakness of the skeletal muscles, especially those of the face, neck, arms, and legs, caused by impaired transmission of nerve impulses following an autoimmune attack on acetylcholine receptors. Also called Goldflam disease.
- Myasthenic facies
myasthenic facies n. The facial expression in myasthenia gravis, consisting of drooping of the eyelids and corners of the mouth and weakness of the facial muscles.
[mahy-uh-toh-nee-uh] /ˌmaɪ əˈtoʊ ni ə/ noun, Pathology. 1. deficient muscle tone. myatonia my·a·to·ni·a (mī’ə-tō’nē-ə) or my·at·o·ny (mī-āt’n-ē) n. Lack of muscle tone. Also called amyotonia.
- Myatonia congenita
myatonia congenita myatonia con·gen·i·ta (kən-jěn’ĭ-tə) n. See amyotonia congenita.
[mahy-a-truh-fee] /maɪˈæ trə fi/ noun, Pathology. 1. . myatrophy my·at·ro·phy (mī-āt’rə-fē) n. Variant of myoatrophy.