Therapeutic Strategies in Dermatology

Creeping Eruption, Larva Migrans, and Larva Currens: Overview

Treatment Cutaneous Larva Migrans (CLM) [The treatment for larva currens is somewhat different so the two diseases are discussed separately.] Cutaneous larva migrans is due to animal (usually canine) hookworm. It presents as serpiginous papules on t…

Therapeutic Strategies in Dermatology

Myiasis: Overview

Overview Myiasis is caused by the larvae of certain botfly species whose larvae penetrate and develop in the skin. The larvae may enter the skin from the bites of other insects that carry the botfly eggs (New World), or by direct skin contact with t…

Histologic Diagnosis of Inflammatory Skin Diseases

Arthropod assaults

…rmatol 2000;136:1559-64. Velho PE, Faria AV, Cintra ML, et al. Larva migrans: A case report and review. Rev Inst Med Trop Sao Paulo 2003;45:167-71. Bibliography for larva currens Ly MN, Bethel SL, Usmani AS, Lambert DR. Cutaneous Strongyloides sterco…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ils, and a worm in the lower part of the epidermis = Cutaneous larva migrans The organism, caught fortuitously by the blade of a microtome, is the larva of Ancylostoma braziliense. When a histopathologist encounters such a worm, it is cause for celeb…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…epidermis. The activity of the mite and progeny of it, namely, larvae and nymphs, conducted within a burrow of scabies, namely, ingestion and defecation, gives rise to intense pruritus. The larva or “creeper” of Ancylostoma braziliense, t…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

In this section, algorithms used to reach specific diagnosis are predicated on “nonspecific” findings recognized best at higher magnification. Other changes requisite for specific diagnoses, i.e., denominators that are essential, then ar…

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

…stained by hematoxylin and eosin. Creeping eruption (cutaneous larva migrans) is caused by hookworm larvae (Ancylostoma species) that induce serpentine, often vesicular tracks as they move through the lower part of the epidermis. A superficial and de…

Dermatology Practical & Conceptual

Diagnosis of ophthalmomyiasis externa by dermatoscopy

…yiasis, is the infestation of the eye or periorbital tissue by larvae of the insect order Diptera. When larvae remain outside the eye it is called ophthalmomyiasis externa, while penetration of the eye is termed ophthalmomyiasis interna. The latter i…