This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Skin
Acrodermatitis enterohepatica occurs due to? 
Select and explain. 
A. Copper deficiency, B. Zinc deficiency, C. Iron deficiency, D. Folic acid deficiency
B: Zinc deficiency
Answer: B: Zinc deficiency 
Explanation: Ans. B. Zinc deficiency* AE is characterized by abnormalities in zinc absorption due to defect in intestinal zinc transporter which leads to zinc deficiency.* It is a rare autosomal recessive (AR) disorder which classically present during infancy on weaning from breast milk to formula or cereal which have lower zinc bioavailability than breast milk.* Classical features of AE include: (Mnemonic- "DEAL")* Diarrhea, Depression* Eczematous erosive dermatitis* Alopecia (non scarring), Apathetic look* Lethargy, irritability, whining and crying.