RESUMEN
PURPOSE: In order to render substantial solutions to control the refractory enterobiasis, factors were evaluated which were associated with treatment failure in Enterobius vermicularis infestation. METHODS: An epidemiological study was done in 20 patients with refractory entrobiasis and in 107 preschoolers as a control. The possible symptoms and hygienic habits which may associated with entrobiasis were surveyed by questionnaires. RESULTS: The egg positive rate was 35.0% and 19.6% in patients and control, respectively. The incidence of enterobiasis peaked in 3-9 years of age. Finger sucking, nail biting, bed type, toy sucking, bed sharing with siblings, nocturnal anal pruritus, and nighttime crying/irritability were resulted in as significant factors denoting refractory enterobiasis. CONCLUSION: The prevalence of pinworm was very high in Suwon vicinities. Along with the factors contributing to the refractory enterobiasis, misuse of anti-parasitic drugs was suggested as one of the major causes.