Cutaneous larva migrans or creeping eruption is primarily caused by which organism?

Cutaneous larva migrans, also known as creeping eruption, is primarily caused by the larvae of Ancylostoma braziliense. This condition occurs when the larvae penetrate the skin, typically through contact with contaminated soil or sand, leading to an itchy, serpiginous rash that follows the path of the migrating larvae. Ancylostoma braziliense is a hookworm predominantly found in tropical and subtropical regions and is known for its ability to cause this specific dermatological condition in humans, which generally results from exposure to infected animals, such as dogs or cats.

The other organisms listed do not typically cause cutaneous larva migrans. Ancylostoma duodenale, while also a hookworm, is not the primary causative agent for this condition; it primarily causes intestinal infections. Strongyloides stercoralis is known for causing strongyloidiasis, which involves gastrointestinal symptoms rather than cutaneous manifestations. Enterobius vermicularis is the pinworm and is associated with enterobiasis, primarily affecting the intestinal tract and causing issues such as anal itching, but it does not lead to skin infections. Thus, the correct association of cutaneous larva migrans with Ancylostoma braziliense highlights its role in causing this