Human Itch Mite
Scientific Name: Sarcoptes scabiei var. hominis
Order & Family: Order: Sarcoptiformes, Family: Sarcoptidae
Size: Microscopic; females are approximately 0.30 to 0.45 mm long, while males are about half that size.
Natural Habitat
The epidermis (outer layer) of human skin, typically preferring warm areas like finger webs, wrists, elbows, and skin folds.
Diet & Feeding
The mites feed on dissolved skin cells and extracellular fluid; they do not live off blood.
Behavior Patterns
Mites burrow into the upper layer of the skin where the female lays eggs. They travel beneath the surface creating tiny zig-zag tunnels. The infestation causes an allergic-like reaction that leads to intense itching, often worse at night.
Risks & Benefits
Causes Scabies, a highly contagious skin infestation. Risks include severe itching, rashes, and potential secondary bacterial infections (like impetigo) from scratching. There are no ecological benefits; they are obligate parasites.
Identified on: 5/15/2026