A 25-year-old man presented with intermittent selflimiting episodes of diarrhoea for 5 months. At times, he opened his bowel 8 times a day with small stool volume. His stool consistency ranged from soft to watery. Apart from a weight loss of 3 kg, no other constitutional or extraintestinal symptoms were reported. He admitted to have multiple sexual partners in the past and had been treated for gonorrhoea but denied any drug abuse or homosexuality.
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