Cushing syndrome is and overarching term that encompases Cushing disease, subclinical Cushing syndrome, paraneoplastic Cushing's disease, and other tumors. subclinical Cushing's was more what I was referring to when I wrote 'congenital form of Cushing's syndrome'. You don't honestly think I was talking about something that is a 1-in-100,000 condition when talking about Alzheimer's do you?

As you want to be pedantic 'Subclinical Hypercortisolism' would be the much more accurate terminology.