Myasthenia Gravis (MG) is a serious neuromuscular disorder caused by the immune system mistakenly attacking receptors on muscle tissue. It leads to significant muscle weakness, especially in muscles that control the eyes and eyelids, and may also affect the jaw, limbs, and even respiratory muscles. In severe cases, MG can be life-threatening.
Common Symptoms of Myasthenia Gravis
The hallmark symptom of MG is noticeable muscle weakness that worsens as the day progresses, particularly after repeated use of the affected muscles. Early signs often include:
- Drooping eyelids (ptosis)
- Eye fatigue or blurred vision
While some individuals experience only ocular symptoms (ocular MG), others develop generalized MG, affecting multiple muscle groups. Additional symptoms may include:
- Weakness in the mouth and jaw, causing difficulty chewing, swallowing, or speaking
- Limited facial expressions
- Weakness in the arms, legs, and neck
In rare cases, a myasthenic crisis may occur—a life-threatening condition marked by severe respiratory muscle weakness, often triggered by medication changes, infections, or surgery.
