Pinworm infection , also known as enterobiasis , is a human parasitic disease caused by the pinworm .  The most common symptom is itching in the anal area.  This can make sleeping difficult.  The period of time from swallowing eggs to the appearance of new eggs around the anus is 4 to 8 weeks.  Some people who are infected do not have symptoms. 
A pinworm infection is one of the most common types of human intestinal worm infections. Pinworms are tiny, narrow worms. They’re white in color and less than a half-inch long. Pinworm infections are also known as enterobiasis or oxyuriasis.