Rheumatoid arthritis (RA) is a common condition affecting around 1% of the population. Around 90% of patients with RA have cervical spine involvement with between 11% and 58% of these patients having neurological involvement.3,4 Many of these patients have cervical myelopathy.
Pinworms are a type of parasite that lives in the digestive system of humans. They are common throughout the world. Adult pinworms are about 0.5 in. (12.7 mm) long and look like little white threads. Pinworm eggs are so tiny, you'd need a microscope to see them.
Pinworms are about the length of a staple -- 5 mm to 10 mm -- and thrive in the human cecum and appendix. The eggs are usually ingested, infect the intestinal tract, and then the female pinworms leave the intestine through the anus where they deposit more eggs on the surrounding skin.