When poliovirus infects your body, it affects nerve cells called motor neurons particularly those in your spinal cord that carry messages (electrical impulses) between your brain and your muscles.

CNN: Post-polio syndrome

Also, Helms gets around the Senate on a motor scooter because of knee surgery and a nerve condition in his feet.

CNN: Jonathan Karl: Helms built North Carolina GOP

Nerve injury, which can be due to diabetes or seat belt injury after a motor vehicle accident, for example, also can cause meralgia paresthetica.

CNN: Meralgia paresthetica