The incidence of<unk>  is 4.6 per 1 million per year, affecting men and women equally.<unk>  can occur at any age, but there are peaks around age 10, age 20, and after age 40.
Transverse myelitis
Lhermitte's sign
Vascular myelopathy
Acute flaccid myelitis
Amyotrophic lateral sclerosis
Surfer's myelopathy
CMV polyradiculomyelopathy
Primary lateral sclerosis