I am a 150 lb. 50 yr. old woman with no previous gastro concerns, no daily meds, a daily antioxidant supplement with a multivite w/iron, daily diet with variety of fruits & veggies, milk, yogurt, chicken, fish, beef, whole grains, & beans with very little processed food, no food allergies.  Lifelong exerciser, presently in pool 2x - 3x a week, but sedentary lifestyle past decade due to spinal injuries.  Developed bouts of severe abdominal pain and GI distress with heartburn & reflux this year.  Suspected two pain meds used occasionally for chronic back and neck pain (Percocet & Fiorinal) but discovered each time I eat pistachios, even just 10 or 12, I get the same horrible GI distress.  No itching or hives or other allergic-type symptoms.  Is this considered an allergy?  Is there a name for it, the way that gluten intolerance is called Celiac Sprue Disease or "wheat allergy"???
Hi. Thanks for your query and an elucidated history. Pistachios are known to cause an intolerant GI symptom and is called Pistachios Intolerance. This is definitely an allergy to its contents but only with Gastrointestinal manifestations. So the treatment is basically never to have them or any food parts which have similar properties. In addition, you have been taking Percent and Final. Both these can enhance the already existing problems. Sedentary life will have its negative effects on the body. Try to be as much ambulatory as possible, and you can certainly go for passive exercises under the guidance of a Physiotherapist, ...