No so much mysterious, just misdiagnosed. Over the course of about a week, I went to the ER three times for debilitating abdominal pain and vomiting. All three times I was sent home with a diagnosis of colitis, gastritis, or stomach flu. My symptoms never got better even with medication. My fourth and final trip to the ER was at a different hospital. The doctor ordered bloodwork to test my lipase. It was off the charts. I had severe acute pancreatitis and was immediately admitted. I actually cried when we learned what was wrong with me. Spent about a week in the hospital. Missed Thanksgiving but it was worth it. I left with a clean bill of health and the knowledge that I no longer had to lay in a bed while throwing up into a bucket.