systemic mastocytosis

Could I Have Mastocytosis or MCAS?

Question by Rusty: Could I have Mastocytosis or MCAS?
I have struggled with gastrointestinal problems for years: diarrhea, nausea, vomiting, weight loss, painful radiating abdominal cramps. I saw a pediatric gastroenterologist when I was an adolescent (I am now 22)… Continue reading