An 80-day-old infant was admitted for severe dermatitis, resembling acrodermatitis enteropathica, characterised by erythematous scaly plaques with crusts and ulcerations, predominantly in the diaper area, perioral area and extremities (figure 1). She had generalised severe dermatitis from the first weeks of life unresponsive to conventional treatment. At admission, the patient was below the 3rd percentile for weight and …