Strongyloides stercoralis

Strongyloides stercoralis, also known as threadworm, is a human pathogenic parasitic nematode (roundworm) causing the disease strongyloidiasis. The adult parasitic stage lives in tunnels in the mucosa of the small intestine and is contracted from larvae in the soil that penetrate the skin. Symptoms include vomiting, diarrhea, and peptic ulcer-like pain epigastric pain. Treatment usually consists of a combination of medications, such as ivermectin and benzimidazoles.