1.eyes muscles;

face and throat muscles. impair speaking...

neck and limb muscles. myasthenia gravis can also cause weakness in your neck, arms and  legs...

when to see a doctor.chemicals messengers, called neurotransmitters,fit precisely into receptor sites on your muscle cells.

2.various treatment alone or in combination can relieve symptoms of myasthenia gravis. doctor treatment will depend on your age, how severe  your disease is and how fast it's progressing.