What is the prognosis of pinworm infection (enterobiasis)?

Updated: Jul 17, 2019
  • Author: Sun Huh, MD, PhD; Chief Editor: Michael Stuart Bronze, MD  more...
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Pinworm infection does not cause severe morbidity unless ectopic infection occurs. This rare complication occurs in individuals with conditions that compromise the integrity of the bowel wall (eg, inflammatory bowel disease). Parasites migrate through the bowel wall and are found in extracolonic sites.

Ectopic enterobiases have been described in various locations, including the vagina, salpinx, inguinal area, genital area, pelvic peritoneum, omentum, liver, salivary glands, male genital tract, and even the lungs. They have also been associated with acute appendicitis, eosinophilic colitis, and eosinophilic gastroenteritis. [4]

Pinworm infestation is very rarely fatal; death and morbidity are from secondary infection. A 28-68% increased risk for appendicitis is associated with pinworm infestation. [2]

Eradicating pinworm in groups of institutionalized persons is difficult. Continuous follow-up examination is necessary.

Therapy is much more effective if the child's family and classmates are treated at the same time.

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