Adel is a 2-year-old boy brought to the primary health center by his mother. Adel is short for his age, has a bloated ’swollen’ belly and very thin arms and legs. In addition, he has sun burn-like skin lesions and lightly discolored hair. On being asked about his food, the mother states that Adel has recently been weened and that his present diet consists of sweetened drinks and rice with no milk included.

What is the single most probable diagnosis of Adel’s condition?