Where is the dividing line between MCAS and histamine intolerance?
My doctor declined to give me a diagnosis of MCAS because my symptoms stop short of my airways literally closing up. She gave me a histamine intolerance diagnosis instead. I have yet to find a clear diagnostic guideline for where one stops and the other ends. It’s definitely not a “I’m fine as long as I take DAO supplements” type of person
Is there a firm line between the two or is it basically the discretion of the doctor?