Myasthenia gravis (MG) does not have stages but classes. These classes describe the muscles the condition affects and the severity of muscle weakness, which can influence the treatments a doctor may ...

Myasthenia gravis (MG) is a chronic autoimmune disorder that disrupts nerve-to-muscle signaling. This causes muscle weakness that varies in severity. Symptoms can be localized or more widespread.

LEMS is a rare condition that affects a person’s motor neurons, which are the nerves that control movement. They produce the neurotransmitter acetylcholine, which enables the muscles to work correctly ...

NEW YORK (Reuters Health) - Treatment with a cholesterol-lowering "statin" drug may very occasionally cause double-vision, eyelid-droop, or weakness of the muscles that control eye movement, ...