Amoebiasis
An intestinal infection with the parasite Entamoeba histolytica, spread through contaminated food and water, causing diarrhoea and sometimes a liver abscess.
Quick Summary
Often none. Diarrhoea, sometimes with blood or mucus, tummy cramps, and fever; liver abscess causes upper right pain and fever.
Medicines such as metronidazole followed by a medicine to clear cysts from the gut.
Unsafe water, poor sanitation and eating uncooked food washed in unsafe water.
Overview
Amoebiasis is common in India. Most infected people have no symptoms, but some develop dysentery.
An amoebic liver abscess is a serious complication needing prompt treatment.
Symptoms
Diarrhoea
Sometimes with blood or mucus.
Tummy cramps
And pain.
Fever
With severe illness.
Liver abscess
Fever and pain under the right ribs.
Causes & Risk Factors
Biological Causes
Swallowing cysts of Entamoeba histolytica in contaminated food or water.
Key Risk Factors
- Unsafe water Drinking untreated water.
- Sanitation Poor sewage disposal.
- Food hygiene Raw salads and street food.
Management & Treatment
01. Medicines
Metronidazole or tinidazole.
02. Clear cysts
A second medicine to prevent relapse.
03. Hydration
ORS and fluids.
Frequently Asked Questions
Is it the same as bacterial dysentery?
How is it diagnosed?
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Amebiasis(opens in a new tab) · MedlinePlus, US National Library of Medicine