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Giardiasis

Information from the Medical Directory health library.

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This information supports, and does not replace, advice from your healthcare professional.

Overview

Giardiasis is an intestinal infection caused by the parasite Giardia lamblia. It often leads to diarrhoea, stomach cramps, and digestive discomfort.

Symptoms

Diarrhoea and greasy stools Abdominal cramps and bloating Nausea and fatigue Weight loss in chronic cases

Causes

Ingestion of Giardia cysts via contaminated water or food Person-to-person contact in settings like childcare Poor hygiene and sanitation

Diagnosis

Stool tests to detect Giardia parasites Antigen detection tests

Treatment

Prescription antiparasitic medications Hydration and electrolyte replacement Maintain good hygiene to prevent reinfection

Complications

Chronic diarrhoea Weight loss and malnutrition Dehydration

Prevention

Drink treated or boiled water Wash hands regularly, especially before eating Practice good sanitation and avoid contaminated food

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