Laboratory stool studies to detect parasites. May need to be repeated if early studies are negative. Antibody tests may soon be available. Since stool examinations are frequently false-positive, your doctor may treat on the basis of clinical history and examination. Hospitalization may be required for patients with severe diarrhea to replace lost fluids.
Medication hastens recovery.
Be cautious when away from normal water supplies. Practice careful personal hygiene if you have diarrhea or are around those who do. These can mask symptoms. Your doctor may prescribe an antiparasitic drug such as quinacrine or metronidazole. Alcohol interacts with metronidazole to cause abdominal cramps and nausea, so don't drink alcohol during treatment.