I am reacting to your early posts and the implication that patients are somehow to blame for how seriously this illness is taken.
I know there's a lot of text to plough through, but the broad message is that
doctors are largely to blame.
Not all of them, just ones who hand out diagnoses that aren't widely accepted. One of the reasons for this is that the names—in this case 'mast cell activation syndrome'—suggest the cause of the symptoms is known.
There are several problems there. Firstly, the cause isn't known. Secondly, if the cause were known, it wouldn't be called a syndrome. Thirdly, there's no reason to make these symptoms into a separate entity, when we already have recognised syndromes (ME/CFS, some cases of IBS) that include them. So some people think 'MCAS' makes no sense from any perspective.
Patients just got stuck in the middle, which is the reason for the thread. Some were unknowingly recruited by doctors in private practice (often in the US) to help boost their profile as 'experts' in these conditions by sharing stories about them. In other words, sick people are used as unpaid influencers to help unscrupulous practitioners make a lot of money.
So the advice is for patients to be aware of the controversy, especially when describing problems to new doctors. If they encounter one who's sceptical about these diagnoses, they risk being seen as caught up in fringe medicine and therefore potentially lacking credibility.
That might be unfair, but the risk is real. It may help if we focus on symptoms rather than diagnoses, and describe our experience in our own words rather than using phrases we've read. Doing that gives a doctor the best chance to work out what's going on, and potentially to spot something another one missed.
We also need to be aware that sharing positive internet stories about these diagnoses may harm people who don't yet know the background. Doctors' notes can include coded or inflected information, and once something's written into a person's medical record, every future doctor can see it.