Case history

Case history

A 5-year-old boy presents with complaints of restlessness at night and itching in the perianal area. Otherwise, the child is well with no fever, weight loss, or diarrhea. Physical exam is unremarkable except for some local perianal erythema.

Other presentations

Occasionally, pinworms may migrate to unusual sites and cause ectopic disease. The most common location for ectopic disease is the female genitourinary tract, where vulvar pruritus (pruritus vulvae) may occur.[1]​ Rarely, pinworms may ascend into the urethra or vagina and may cause urethritis, vaginitis, or salpingitis.[1][2][3][4]​​​[5]​ Pinworms have been associated with abscess and granuloma formation within the intestines, along the perineal skin, and within the peritoneum.​[1][6][7][8]​​​[9]​ Pinworms have been identified in appendiceal tissue after appendectomy and autopsy, but are not thought to cause acute appendicitis.[1][10]

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