Amebiasis

Viren Kaul, MD, Faruq Pradhan, MBBCh and Sujit Suchindran, MD, MPH Reviewed 06/2017
 


BASICS

Amebiasis is caused by Entamoeba histolytica, an intestinal protozoan found worldwide. 

DESCRIPTION

  • Fourth leading parasitic cause of death worldwide (behind malaria and schistosomiasis) (1)

  • Most ...

DIAGNOSIS

HISTORY

  • Noninvasive infection (symptoms often nonspecific)

    • Mild diarrhea

    • Abdominal discomfort

  • Invasive infection (amebic colitis; amebic dysentery)

    • Gradual onset of bloody diarrhea

    • Abdominal p...

TREATMENT

  • Primarily outpatient. Fulminant colitis with hypovolemia or complicated liver abscess requires inpatient management.

  • Asymptomatic E. histolytica infection should be treated with luminal agent...

ONGOING CARE

FOLLOWUP RECOMMENDATIONS

MONITORING

Repeat stool studies after completing therapy to ensure eradication. 

DIET

As tolerated 

PATIENT TEACHING

Maintain good hygiene and avoid reexposure. 

PROGNOSIS

REFERENCES

Hung CC, Ji DD, Sun HY et al. Increased risk for Entamoeba histolytica infection and invasive amebiasis in HIV seropositive men who have sex with men in Taiwan. PLoS Negl Trop Dis. 2008;2(...

ADDITIONAL READING

  • Global Burden of Disease Study 2013 Mortality and Causes of Death Collaborators. Global, regional, and national age-sex specific all-cause and cause-specific mortality for 240 cause...

SEE ALSO

Diarrhea, Acute; Diarrhea, Chronic 

CODES

ICD10

  • A06.9 Amebiasis, unspecified

  • A06.0 Acute amebic dysentery

  • A06.4 Amebic liver abscess

  • A06.3 Ameboma of intestine

  • A06.7 Cutaneous amebiasis

  • A06.6 Amebic brain abscess

  • A06.5 Amebic lung abscess

  • A06.1...

PEARLS

  • Most E. histolytica infections are asymptomatic. Treat with luminal agents to eradicate infection and prevent shedding of cysts.

  • Invasive infection is treated by nitroimidazole agents followed b...

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