A one and half a month-old infant, a female, was brought to this hospital with the chief problem of diarrhea lasting for more than one week. Four days after admission, symmetric and nonpruritic lichenoid papules developed over her face and limbs. Physical examination showed several small palpable lymph nodes over the bilateral inguinal areas, but without hepatosplenomegaly. Gianotti-Crosti syndrome was diagnosed. Latter on, cytomegalovirus (CMV) was isolated from urine and throat swab. It seemed that this case of Gianotti-Crosti syndrome was associated with CMV infection.