My ex’s doctor refused to refer her to a specialist because he didn’t think she had the condition they specialized in. Until I went along one time and just asked “what makes you rule it out?”

At that point, he admitted knowing nothing about the condition and said he’d do some research. Which he did do and promptly referred her to the specialist because it matched her weird symptoms very well and she’s since been diagnosed with two variants of it (one from each parent).

And the sad part is that doctor was her better newer doctor after getting rid of one whose advice would have killed her because he didn’t realize the birth control he wanted her to finish the course of was causing her organs to shut down because he didn’t bother with the follow up blood tests he was supposed to do or take her severe symptoms seriously.