Pinworm

Natural Habitat

Human gastrointestinal tract (colon/rectum) and surrounding perianal skin; eggs can persist on household surfaces/textiles.

Diet & Feeding

Intestinal contents and organic matter within the human digestive system.

Behavior Patterns

Nocturnal females migrate from the anus to deposit thousands of eggs on the perianal skin, causing intense itching. Life cycle involves ingestion of eggs and maturation within the host.

Risks & Benefits

Risk: Causes enterobiasis, an infection characterized by perianal itching, restlessness, and secondary skin infections from scratching. No ecological benefits.

Identified on: 1/10/2026