For those with non-celiac gluten sensitivity, what were your symptoms before going GF?

I have been working with an allergist to understand some reactions I have been having for the past couple years and after lots of inconclusive tests he is suggesting that I go fully gluten free for 6 weeks to see if it helps.

Issues I have been having: random reactions to food and alcohol, they are unpredictable and often not reproducible, but include hives, face & chest rash, itchy face, rapid heart rate, runny nose and/or congestion. My blood & urine tests do not appear to indicate histamine intolerance or MCAS, but my allergist said that wheat/gluten intolerance can cause these types of reactions. I also have a history of unknown GI issues/IBS.

Just wondering if this is a familiar experience for those with NCGS or if it's a stretch to try to find relief for me.