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, the most common worm infection in the U.S., are white-tan, round and less than half an inch in length. Pinworms can live in the human colon and rectum. They cause itching when the female worm crawls out at night and lays her eggs around the anus.