Option B is correct. Myasthenia gravis (MG) is a chronic autoimmune disorder in which antibodies break the verbal exchange between nerves and muscle, resulting in weak point of the skeletal muscles.
Myasthenia gravis affects the voluntary muscle tissue of the body, especially these that manipulate the eyes, mouth, throat and limbs.
Cause of myasthenia gravis
Myasthenia gravis is caused through a hassle with the alerts sent between the nerves and the muscles. It's an autoimmune condition, which means it is the end result of the immune machine (the body's herbal defence against infection) mistakenly attacking a healthy phase of the body.
The age unique mortality charges have been low under 50 years. After this age the mortality improved with age in each sexes; after 60 years more unexpectedly in guys than in women. The normal survival costs three, five, 10, and 20 years from analysis had been 85%, 81%, 69%, and 63% respectively.
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