Extensive Cutaneous Larva Migrans

Cutaneous larva migrans (CLM) is a common dermatosis that is acquired in subtropical areas and is caused by animal nematode larvae, mainly including Ancylostoma braziliense and occasionally Ancylostoma caninum. Larvae penetrate the skin after contact with infected soil and cause creeping eruptions. Typically, a single or a few tracts are present. We report an unusual case of an extensive infection. A previously healthy 18-year-old man presented with a 1month history of diffuse and pruritic skin eruption located mainly on the thorax and abdomen. He had returned 1 month earlier from a 2-week trip to Martinique where he had laid on the local beaches. He presented with diffuse linear erythematous and serpiginous tracts (Figures 1 and 2). Laboratory tests revealed leukocytosis of 14.5 × 10/mm with 47% eosinophils. The clinical diagnosis was typical CLM. He was successfully treated with a single dose of oral ivermectin (200 μg/kg). In most cases, CLM manifests as a single of a few serpiginous tracts. A more widespread eruption may be associated with a follicular location. Some parasitoses such as strongyloidiasis or scabies may manifest with a particularly high burden of parasites and are reported in these circumstances such as “hyperinfection.” Similar to these types of parasitoses, the unusual clinical presentation of our patient with widespread lesions suggest a hyperinfection of CLM.