TUNGIASIS

By Gary M. White, MD


Tungiasis is the invasion of the skin by the sand flea Tunga penetrans--also known as the chigoe.

Clinical

Single or multiple erythematous, painful papule(s) on the toe or feet are characteristic of Tungiasis. Dermoscopy shows in the central part of the lesion a brown ring with a central pore.   This corresponds to the pigmented chitin surrounding the posterior opening of the exoskeleton.

Complications are relatively uncommon but include bacterial superinfection (more common in countries with less hygienic conditions) which can lead to cellulitis, gangrene and loss of toes etc. Other complications include nail dystrophy and/or loss and even tetanus.

Treatment

Curettage after infiltration of local anesthetic is effective. Oral thiobendazole 25 mg/kg/day for heavily infected patients has been used.

References

Dermatology Online Journal 14(12)

Note: There are many (graphic) videos of the removal of the sand flea on youtube.

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