Clinical Quiz #2:
A 15 years old boy presented to the emergency department because of history of abdominal pain and nausea since 6 months. The GP started Proton Pump Inhibitors (PPI) and anti-emetic medication because of suspicion of his history of autism spectrum disorders and the known frequent gastro-intestinal symptoms in these children. No history of hematuria or dysuria.
Urine test showed no proteinuria (Totaal protein/creatinine ratio 0.10g/g creat.), No hematuria or pyuria. Culture negatif.
Question: What is the most probable diagnosis?