Summary of Enterobius vermicularis (Pinworm)
A 5-year-old boy is brought to his pediatrician because of anal itching, nocturnal restlessness, and irritability for the past two days. Upon examination of the rectal area, small (approximately 8-10 millimeters in length) thread-like, white specimens can be seen near the anus (see image below). The pediatrician performs a cellophane-tape test and sends the tape to the laboratory for microscopic examination. Which of the following is the most likely diagnosis?