Myasthenia Gravis | Symptoms and Causes

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What are the symptoms of myasthenia gravis?

The most common symptom of myasthenia gravis is muscle weakness that gets worse later in the day or after a period of activity.

Other common symptoms can include:

  • drooping eyelids or double vision
  • difficulty speaking
  • difficulty swallowing
  • fatigue
  • weak neck muscles
  • problems walking
  • lopsided facial expressions

Every person with myasthenia gravis doesn’t have all of these symptoms, and the symptoms can change over time.

The symptoms of myasthenia gravis can get worse from:

  • alcohol use
  • fatigue or lack of sleep
  • taking certain medications, including penicillamine, interferons, certain antibiotics and cardiovascular drugs

What is the cause of myasthenia gravis?

It is not known why certain people develop myasthenia gravis. It is not a condition that is passed down in families.

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