What is the primary symptom associated with Myasthenia Gravis (MG)?

Myasthenia Gravis (MG) is primarily characterized by severe muscle weakness that typically worsens with activity and improves with rest. This neuromuscular disorder arises from an autoimmune response where antibodies attack the communication between nerves and muscles, leading to a reduction in muscle strength. Patients with MG may experience specific muscle fatigue that increases with prolonged use, affecting their daily activities and quality of life.

The symptoms of chronic fatigue, persistent headaches, or joint pain are not hallmark features of Myasthenia Gravis. While fatigue can be associated with various conditions, in the context of MG, it is specifically related to muscle weakness rather than generalized tiredness. Headaches and joint pain do not align with the typical presentation of MG and are more indicative of other medical issues. Understanding these distinctions is crucial in identifying and diagnosing Myasthenia Gravis effectively.