75-year-old male with multiple complaints related to both his lumbar and cervical spine. He complains of low back pain, cramping and numbness in his thigh muscles, radiating left leg pain to his toes, as well as unsteady gait. He experiences numbness in his shoulders, arms and hands that gets worse over the day. He had a C4-5 fusion and a lumbar procedure at L4-5. The cervical MTI showed degenerative disease worse at C6-7 where there is moderate central and foraminal stenosis.

75-year-old male with multiple complaints related to both his lumbar and cervical spine. He complains of low back pain, cramping and numbness in his thigh muscles, radiating left leg pain to his toes, as well as unsteady gait. He experiences numbness in his shoulders, arms and hands that gets worse over the day. He had a C4-5 fusion and a lumbar procedure at L4-5. The cervical MTI showed degenerative disease worse at C6-7 where there is moderate central and foraminal stenosis.

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.

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

66-year-old male with a 6-year history of sensory symptoms in the feet and hands. He describes a sensation of cold and stinging in the feet; and numbness in the hands, especially at night. Nerve conduction and EMG demonstrated axonal and demyelinative sensorimotor neuropathy with neurogenic changes in muscles. Follow-up nerve conduction testing that was performed 2 years later showed similar findings.

43-year-old male suffered of cervical disc herniation, and therefore C5-6 and C6-7 discectomy and fusion were done. About one year later he experienced acute sciatica followed by hot pricking sensation in the arm and neck. MRI showed far lateral bulge of L3-4 on the left and small disc bulge on C4-5, and a larger C5-6 disc herniation. Neurological examination disclosed C6-C7 radiculopathy on the left, minimal weakness of biceps and triceps muscles and reduced biceps reflex. EMG and physical examination were consistent with bilateral radiculopathy, attributed to small disc herniation.

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.