Table 1. Disorders presenting with signs and symptoms that mimic motor neuron disease.

Adrenoleukodystrophy

Central nervous system tumors

Cervical and lumbar myelopathy

Chronic inflammatory demyelinating polyradiculoneuropathy

Human Immunodeficiency Virus (HIV)

Inflammatory myopathies

Lambert-Eaton Syndrome

Lyme disease

Multifocal motor neuropathy with conduction block

Multiple Sclerosis

Myasthenia gravis

Polyradiculopathy

Syringomyelia