<unk>  is a rare nontraumatic injury causing paraplegia which is paralysis below the waist. It is a spinal cord injury caused by hyperextension of the back. When the back is hyperextended, a blood vessel leading to the spine can become kinked, depriving the spinal cord of oxygen The condition gets its name because the phenomenon is most often seen in those surfing for the first time, but it can be caused by any activity in which the back is hyperextended (yoga, pilates, etc.). In some cases the paralysis is permanent.
Surfer's myelopathy
Vascular myelopathy
Amyotrophic lateral sclerosis
Juvenile primary lateral sclerosis
Primary lateral sclerosis
Anterior horn disease
Occipital horn syndrome
CMV polyradiculomyelopathy