72-year-old female developed progressive dysarthria and dysphagia. Her doctor describes her speech difficulty as “Spastic dysarthria with slow and nasal speech" and noticed decreased mobility in the tongue and palate. She underwent multiple investigations and started Rilutek. Since there is no biologic marker for ALS, the expert suggests further testing that is focused on trying to rule out other disorders and show diffuse lower motor neuron involvement

71-year-old female developed progressive dysarthria and dysphagia. Her doctor describes her speech difficulty as “Spastic dysarthria with slow and nasal speech" and noticed decreased mobility in the tongue and palate. She underwent multiple investigations and started Rilutek. The differential diagnosis of isolated swallowing and speaking difficulties include: Early motor neuron disease, Cranial neuropathies, Myopathies, Neuromuscular junction disorders and Neurodegenerative movement disorders.

71-year-old female developed progressive dysarthria and dysphagia. She underwent multiple investigations and started Rilutek. Her EMG study does not meet published criteria for the electrophysiologic diagnosis of motor neuron disease. In the expert's opinion, a definite diagnosis is not possible at the present time, and there would be utility in repeating clinical and electrophysiologic testing. The expert also recommends to perform pulmonary function testing.

45-year-old male who presented with acute onset of flaccid paraparesis more pronounced on the left, sensation of current shocks in both legs and sensory level from the umbilicus downwards. The symptoms have reached their pick within less than a day. On examination the left lower limb was plegic and the right lower limb was partially weak. EMG was interpreted as demyelinating sensorimotor neuropathy. MRI showed hyperintense signals at the dorsal terminal segment of the marrow consistent with myelitis.