Dermatologic Manifestations of Tungiasis Workup
- Author: Neil F Gibbs, MD; Chief Editor: William D James, MD more...
Other Tests
- Sometimes, a serosanguineous exudate oozes from the central opening, and eggs may be seen on microscopic examination.
- Dermoscopy can be performed on a papule, and sometimes a dark ring with central pore can be visualized, which corresponds to the posterior opening of the flea.[8]
Procedures
- A skin biopsy of a suspected papule or nodule may be performed.
Histologic Findings
Histologic examination reveals an intraepidermal cavity lined by an eosinophilic cuticle, which represents the body of the flea. In the cavity are round to oval eggs, hollow ringlike components of the tracheal system, and the digestive tract (see image below). A thick band of striated muscle runs from the head to the terminal orifice. Usually, an inflammatory infiltrate is present in the subjacent dermis.
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