Amoebic infections are caused by single-celled organisms known as amoebae, particularly Entamoeba histolytica. These infections primarily affect the intestines, leading to symptoms such as diarrhea, abdominal pain, and in severe cases, dysentery. They are often contracted through contaminated food or water, especially in areas with poor sanitation. Diagnosis typically involves stool tests to identify the presence of amoebae. Treatment usually includes medications like metronidazole or iodoquinol to eliminate the infection. Preventive measures focus on maintaining good hygiene and ensuring safe drinking water to reduce the risk of infection.