Atypical Presentation of Cystic Fibrosis in An Infant

Dermatitis as an initial manifestation of cystic fibrosis (CF) is unusual. The eruption is usually first noted in the perineum anywhere from several days to few months after birth. It subsequently spreads to the extremities and trunk. We report a 2-month-old male baby who presented with failure to thrive, hypoproteinemia, anemia, and a cutaneous eruption resembling acrodermatitis enteropathica. Oral zinc supplementation resulted in temporary resolution of the dermatitis. A further workup revealed the diagnosis of CF. The rash was responsive to nutritional and pancreatic enzyme supplementation.