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.
Pinworm infection is caused by the helminth (Enterobius vermicularis), a small, white parasitic worm. The pinworm is about the length of a staple (ranges from 2 to 13 mm [0.08 to 0.5 inches]) and lives for the most part in the rectum of humans. While an infected person is asleep, female pinworms exit the intestines through the anus and deposit eggs on the skin around the anus.