Pinworm
Scientific Name: Enterobius vermicularis
Order & Family: Order: Oxyurida, Family: Oxyuridae
Size: Females are 8–13 mm long; males are 2–5 mm long.
Natural Habitat
Human gastrointestinal tract, primarily the large intestine and rectum.
Diet & Feeding
Nutrients found in the host's intestinal contents and mucosal secretions.
Behavior Patterns
Nocturnal behavior where gravid females migrate out of 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. It is highly contagious but generally not dangerous.
Identified on: 2/13/2026