Noun: myasthenia ,mI-us'thee-nee-u
- A chronic progressive disease characterized by chronic fatigue and muscular weakness (especially in the face and neck); caused by a deficiency of acetylcholine at the neuromuscular junctions
"The patient with myasthenia gravis struggled with simple tasks like chewing and speaking";
- myasthenia gravis
- Any muscular weakness
"Her myasthenia made it difficult for her to lift heavy objects"
Derived forms: myasthenias
Type of: autoimmune disease, autoimmune disorder, disease of the neuromuscular junction, physical condition, physiological condition, physiological state
Encyclopedia: Myasthenia