Teen diagnoses her own disease in science class

For eight years, Jessica Terry suffered from stomach pain so horrible, it brought her to her knees. The pain, along with diarrhea, vomiting and fever, made her so sick, she lost weight and often had to miss school. Her doctors, no matter how hard they tried, couldn't figure out the cause of Jessica's abdominal distress. Then one day in January, Terry, 18, figured it out on her own.
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