The drug Tensilon is slowly given through an intravenous line. The health care provider may want to fatigue your muscles by having you do various exercises such as counting until your voice diminishes or holding your arms above your shoulders until they drop. The rest of the Tensilon is then given. You will be asked to perform some repetitive muscular movements like crossing and uncrossing your legs with particular attention paid to whether your muscle strength is improved by the Tensilon. The test may be repeated and additional Tensilon may be given to help tell the difference between myasthenia gravis and other conditions. | 
Neuromuscular Disorders (e.g., ALS/Lou Gehrig's Disease)
