Pinworm
Scientific Name: Enterobius vermicularis
Order & Family: Order: Rhabditida, Family: Oxyuridae
Size: Females are 8-13 mm long; males are smaller at 2-5 mm
Natural Habitat
The human large intestine and rectum
Diet & Feeding
Intestinal contents, bacteria, and epithelial cells within the host's gut
Behavior Patterns
Nocturnal migration where gravid females travel through the anus to deposit eggs on the perianal skin, causing itching
Risks & Benefits
Causes enterobiasis, an infection characterized by intense anal itching, irritability, and disturbed sleep; generally not dangerous but highly contagious
Identified on: 3/13/2026