1. Ascariasis

2. Ascariasis Ascariasis is caused by Ascaris lumbricoides
most prevalent helminthiasis

3. Ingestion the eggs→larve→lungs →ascend the trachea→reswallowed → entering the intestines again
→mature and produce eggs
→excreted in the stool

4. Manifestations
1-presence of adult worms in the intestine. abdominal pain , distention Intestinal obstruction 2-migration of the larvae to other sites Pulmonary ascariasis 3- biliary obstruction

5. Examination of fresh stool for characteristic eggs is diagnostic.
Diagnosis
Examination of fresh stool for characteristic eggs is diagnostic.

6. TREATMENT Albendazole (400 mg PO once, for all ages)
Mebendasole(100 mg bid PO for 3 days or 500 mg PO once for all ages), or pyrantel pamoate (11 mg/kg PO once, maximum 1 g)
Piperazine citrate(150 mg/kg PO initially, followed by 6 doses of 65 mg/kg at 12 hr intervals PO)
nitazoxanide(100 mg bid PO for 3 days for children 1–3 yrs of age, 200 mg bid PO for 3 days for children 4–11 yr, and 500 mg bid PO for 3 days for adolescents and adults)