One thing I dislike about medical doctors, is many of them try to "dumb things down" when talking to me. I'd much prefer they tell me the correct technical medical terminology. Some of it I already know what it means, and if I don't I can always ask them to explain further, or go look it up and read more about it.

(My mother and brother are doctors, and I don't get the feeling they are dumbing things down if I ask them for medical advice.)

A professional who talks about technical details, even if I don't completely understand those details, gives me the impression that they know what they are talking about, and that makes me feel confident in their abilities.