Which statement about myasthenia gravis is the most accurate? A. People diagnosed with myasthenia gravis invariably have a thymoma. B. AChE inhibitors used to treat myasthenia gravis increase activity...

Which statement about myasthenia gravis is the most accurate?

A. People diagnosed with myasthenia gravis invariably have a thymoma.

B. AChE inhibitors used to treat myasthenia gravis increase activity in the motor cortex of the brain.

C. Glucocorticoids can be of benefit in myasthenia gravis because of their antiinflammatory actions.

D. The unwanted effects of acetylcholinesterase (AChE) inhibitors include diarrhoea, urination, miosis, bradycardia, nausea, lacrimation and salivation.

E. Plasmapheresis reduces plasma levels of butyrylcholinesterase, thereby reducing breakdown of acetylcholine.