Also known as the creeping eruption. A serpentiginous, intensely pruritic, rash caused by the larva wandering around in the skin. Since humans are not the usual hosts (that intended host is the dog or cat), the larva gets lost.
Lying in cat poo or dog poo on a beach where they have used the sand as a toilet.
Ivermectin 12 mg single dose
It is self limited, but can try thiabendazole cream 10% bid for 7 days OR 25 mg/kg po bid for 2 d.