quickymart: I don't know how common this is, but I've never heard of it? And I have a fair few relatives over 70.
I've noticed American medical practice sometimes have different or various terms for condition names we are used to. Imo they have more practice specialization so it probably makes sense there are more diagnoses in that context. Prescribing practice for similar conditions also tends to have more variety. It might be something you already know by another name.