Ravenclaw, Lambert Eaton Myasthenic Syndrome (LEMS) is a form of myasthenia but it is not myasthenia gravis. In LEMS a different part of the neuromuscular junction is affected and one of the key differences between MG & LEMS is that in MG your muscles get tired with use, in LEMS however your muscles get tired when they are rested. There are different blood tests for LEMS tat are not the same as are used with MG.

You need to let your neurologist know this difference as the treatments are different and with LEMS there is a significantly higher risk of developing cancer.

Here is a exert and link to an article discussing LEMS publishes on the MDA website:

"Unlike weakness in myasthenia gravis, weakness in LEMS temporarily improves after exertion."

http://mda.org/disease/lambert-eaton...s-and-symptoms

Be sure to let your neurologist know that you have more muscle weakness when resting, it is a very key and unique trait seen with only LEMS

Joe