Hookworm - Mouth of the Organism

This photograph shows the front section of the hookworm, and the mouth parts which it uses to feed. The chitinous plates, used to attach to the lining of the intestine where they suck blood for nourishment, are visible. Three species of hookworm cause infection in the United States, including this species, Necator americanus. (Courtesy of the Centers for Disease Control.)

Hookworm - Close-Up of the Organism

This is the mouth part of the hookworm Ancyclostoma duodenale. The hookworm uses curved sharp teeth to attach to the lining of the intestine where it sucks blood for nourishment. (Courtesy of the Centers for Disease Control.)

Hookworm - Ancyclostoma Caninum

This is a photograph of the hookworm's appearance against the lining of the intestine (intestinal mucosa). (Courtesy of the Centers for Disease Control.)

Cutaneous Larva Migrans

Cutaneous larva migrans is a condition that occurs when dog or cat hookworm larvae migrate through the skin. The migration produces a raised, red, twisting (serpiginous) pattern on the skin.

Strongyloidiasis, Creeping Eruption on the Back

Hookworm larvae that have migrated through the skin have caused the reddish serpiginous (snake-like) pattern on the left side of this individual's back.