About Myasthenia Gravis

About Myasthenia Gravis

What is myasthenia gravis?

Myasthenia gravis (MG ) is a rare autoimmune, neuromuscular condition that causes muscle weakness and fatigue.(1) In fact, the name literally means “serious muscle weakness,” which is the main symptom.(2)

For people with MG, the body's own defences can cause debilitating and potentially life-threatening muscle weakness. (3,4) Put simply, the body's natural defences are not working the way they’re supposed to. (3)

It often starts in the face, with first signs including eye muscle weakness that can lead to drooping eyelids and double or blurred vision.(3,4,5) MG also affects muscles involved in talking, chewing, swallowing, and breathing, and can extend to the arms and legs. (3,4,5)

Because MG is rare, it can be difficult to recognise and fully understand the disease, its symptoms and the day-to-day impact.

1. Hehir MK, et al. Neurol Clin. 2018;36(2):253-260.

2. National Institute of Neurological Disorders and Stroke, Myasthenia Gravis webpage.

3. Gilhus NE, et al. Nat Rev Dis Primers. 2019;5(1):30.

4. Stetefeld H, et al. Neurol Res Pract. 2019;1(19):1-6.

5. Mantegazza R, et al. Ann N Y Acad Sci. 2003;998:413-23

Some MG symptoms include

Eyelid drooping

Blurred or double vision

Difficulty speaking

Difficulty chewing/swallowing

Difficulty supporting neck

Shortness of breath/difficulty breathing

Difficulty walking/standing

Weakness in the arms and legs


Fatigue from repeated muscle use

Living with MG in the words of patients

Explaining MG to others

Explore stories of the MG community