Myasthenia Gravis (MG) is a chronic autoimmune neuromuscular disorder that causes weakness in the voluntary muscles, especially those that control the eyes, face, throat, and limbs. It occurs when the body’s immune system produces antibodies that interfere with communication between nerves and muscles, particularly by blocking or destroying acetylcholine receptors at the neuromuscular junction.
While MG can affect people of any age, it most commonly occurs in:
Myasthenia Gravis is not inherited or contagious. The exact cause is unknown, but several factors may contribute:
Autoimmune Reaction:
Thymus Gland Abnormalities:
Triggers and Worsening Factors:
MG symptoms vary between individuals but typically worsen with activity and improve with rest. They may develop gradually or suddenly.
Common Symptoms:
Symptoms often worsen in the evening or after prolonged activity, and improve with rest.
A proper diagnosis involves a combination of history, clinical examination, and diagnostic tests:
Physical and Neurological Examination:
Specific Tests:
While there is no cure, MG can be effectively managed. Treatment aims to improve muscle strength and reduce immune system attacks.
Main Treatment Options:
Medications
Plasmapheresis or Intravenous Immunoglobulin (IVIG)
Thymectomy
Lifestyle Management
A myasthenic crisis is a medical emergency where the respiratory muscles become too weak to function. Immediate hospitalization and respiratory support are required.
Myasthenia Gravis is a manageable autoimmune disorder that causes muscle weakness and fatigue. Although it can be serious, with early diagnosis, the right treatment, and supportive care, most people with MG are able to lead active and fulfilling lives.
