@Mer__edith surprised the article doesn’t even mention MCAS as a potential explanation, when the symptoms are quite similar and it’s known to be comorbid with both ME/CFS and POTS
I suppose the individual patients in the study in question were asked more detailed questions to rule it out (as it would have also provoked milk reactions from some other foods—fermented stuff and capsaicin are both triggers) and then it didn’t make it into the article as an option for other people looking for answers…