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Diagnosis of multifocal motor neuropathy usually requires both a careful physical examination, as well as electromyographic (EMG) testing.
Multifocal motor neuropathy is a very rare condition, affecting only about 1 per 100,000 people in the population
I'm wondering exactly the same thing...
MMN will respond to treatment eg IVIg whereas ALS will not
Peripheral neuropathy three types-Focal,Multifocal (mononeuropathy multiplex)and generalized (Polyneuropathy)