It does get confusing all the different symptoms. I think the categorization is for a semblemce of order. Remember the medical field tries to make some order out of our multitude, vast # of symptoms, which could be rather chaotic if not organized in some manner. So to help their clients they find it useful to categorize & label symptoms. Docs are certainly aware most of us don't fit exactly into only 1 specific category, (is anything easy - LOL!)
But . . .b/c were human, we may have a little of this symptom, & some of that, & sometimes even . . . etc. This is IMHO, but I hope You find it helpful. xoxooxoxoxoxoxo