Nelson Textbook of Pediatrics 22nd Edition | Whipworm infection caused by Trichuris trichiura, a soil-transmitted helminth. Transmission: ingestion of embryonated eggs from contaminated soil. Adult worms embed in cecum/colon (anterior portion thin and whip-like). Most infections asymptomatic. Heavy infection → Trichuris dysentery syndrome: chronic bloody diarrhea, tenesmus, rectal prolapse, anemia, growth stunting, clubbing. Diagnosis: stool microscopy (barrel-shaped eggs with polar plugs). Treatment: albendazole (400 mg daily for 3 days) or mebendazole (100 mg bid for 3 days). Ivermectin (600 μg/kg daily for 3 days) is also effective. Prevention: sanitation, hand hygiene.
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