Myasthenia gravis is a rare neuromuscular disorder where voluntary muscles rapidly tire and weaken due to impaired communication between nerves and muscles.
The muscles around the eyes are often affected first, leading to drooping eyelids.
Cause of Myasthenia gravis
Certain medications or viruses can trigger the onset of myasthenia gravis (MG). Drugs that may worsen symptoms in susceptible individuals include:
Beta-blockers
Calcium channel blockers
Quinine
Some antibiotics
Genetic factors may also contribute to the development of MG.
Signs and Symptoms of Myasthenia gravis
Symptoms of myasthenia gravis (MG) vary widely among individuals. They often worsen during periods of activity but improve with rest. Common symptoms include:
Fatigue
Weakness of the eye muscles
Drooping eyelids of one or both eyes
Blurred or double vision
Weakness in the limbs and neck
Difficulty chewing, especially with chewy foods
Difficulty swallowing of food, liquids, and pills
Difficulty speaking, resulting in a weak or quiet voice
Difficulty breathing and shortness of breath
Reduced movement of facial muscles, leading to a weak smile
Most people initially experience eye symptoms, with many developing additional symptoms within two years.
Diagnosis
A doctor can diagnose myasthenia gravis (MG) through several tests, including:
