Reopened this as closed on account of 'veering on medical advice', helpfully. In the world of never use your brain and seek out 'experts' to think for you. Never endeavour to learn anything.
Sorry, to say that this specialism and how its practised isn't hard to understand. It's plainly about observing 'known conditions'. These 'experts' blundered awfully as they cannot think beyond following protocol for known conditions. In short, their analytical skills are very weak and they fall back on assumption when presented with anything atypical.
Is this true of all cases? Well, it's true in this case and that is what is important. I don't give much weight to the word 'expert' when the causality of the problem hasn't even been accepted after ten years of the problem starting, and entirely discounting my observations, which are frankly sound and based on careful observation.