By Gary M. White, MD
Exudative ulceration with necrosis perianally associated with diarrhea is one manifestation of cutaneous amebiasis. The organism is Entamoeba histolytica. Mobile trophozoites may be seen on saline mount. Patients may acquire amebiasis by having vaginal or anal sex with a person suffering from amoebic dysentery.
Cutaneous manifestations of amebiasis include:
The typical case, when transmitted sexually, is a male who develops a painful penile ulcer which progresses rapidly with a mucopurulent discharge. Ulcerations may occur perianally as well.
Cutaneous ulcers may form from direct extension of an underlying amebic abscess. These are most common on the trunk and groin.
An infectious disease expert should be consulted. Metronidazole 750 mg. TID may be used. Abscesses may need to be drained.
An extremely painful ulcer of the glans penis. Indian Journal of STDs
Perianal ulceration. JAAD June 2009;Volume 60, Issue 6, Pages 897–925
Amebic abscess extending to skin causing a cutaneous ulcer. Illustrated lecture notes in Tropical Medicine
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