Myasthenia gravis: myasthenia vs. cholinergic crisis.

A serious complication of myasthenia gravis is respiratory failure. This may be secondary to an exacerbation of myasthenia (myasthenia crisis) or to treatment with excess doses of a cholinesterase inhibitor (cholinergic crisis). Managing respiratory failure and differentiating a myasthenia from a cholinergic crisis is reviewed. Due to the unpredictable development of respiratory failure, hospitalization is recommended for most patients with exacerbations or complications of myasthenia gravis.