Question

Cutaneous larva migrans caused by which organism?

• A. Strongyloides
• B. Toxocara canis
• C. Ancylostoma braziliense
• D. Necator americanus

Answer 1

The Correct Option is C

Step 1: Picture the lesion: a slowly advancing, snake-like itchy line on the foot or buttock of someone who walked barefoot on contaminated sandy soil. That is creeping eruption, the hallmark of cutaneous larva migrans. Step 2: It arises when larvae of a non-human hookworm enter the skin and crawl aimlessly because they reach a dead-end host. The prototypical agent is the cat/dog hookworm $Ancylostoma\ braziliense$. Step 3: Separate the look-alikes - human hookworm Necator/Ancylostoma duodenale go on to the intestine, Strongyloides gives the rapid larva currens, and Toxocara canis travels through viscera and the eye. Step 4: Only the animal hookworm fits the wandering skin track. \[\boxed{\text{Ancylostoma braziliense}}\]