Hookworm Worms attach themselves to the lining of the small intestine. They are the most common cause of iron deficiency anemia worldwide, and can also result in abdominal pain and diarrhea. Occasionally severe protein loss can occur from the intestines. The diagnosis is made by stool examination. Medication is effective.
Infection occurs when poorly cooked meats are ingested.
The most common type of tapeworm in the United States is thought to be transmitted through contact with human feces. Tapeworms can cause obstruction to the intestine, but usually cause few symptoms apart from non specific abdominal pains and occasional diarrhea. The fish tapeworm can cause vitamin B 12 deficiency. Diagnosis is made by stool examination, and effective medication is available. Pin worm is frequently seen in young children.