Another Dutchie here.

Anything not immediately fatal is indeed treated by just taking it easy and perhaps some paracetamol for the placebo effect.

I have a chronic illness in the same kind of category and it took me years to find out what it was and to get proper treatment. Which has improved my quality of life dramatically!

But even now I travel halfway across the country to a university hospital where a specialist takes me seriously, the GP is still a bit 'meh whatever'. I'm fairly sure he put a "psychosomatic/hypochondriac" flag on my file and never removed it when the specialists diagnosed me.

Our healthcare system has overcorrected on what they dismiss as 'aanstellerij' en 'Amerikaanse toestanden' and many in the field are actually quite proud of this.