What are the most common early symptoms of myasthenia gravis?

For most people, early signs and symptoms of myasthenia gravis are related to weakness in the muscles of the eyes and eyelids and include problems with eye movement, droopy eyes, or double vision. Symptoms affecting muscles in the face, neck, and throat are among the earliest issues for about 15% of patients, and may include changes in facial expressions and difficulties chewing, swallowing, or speaking.