Question about DUPA

You know how with senile alopecia or DUPA, the hairs miniaturize but don’t (usually anyways) actually shrink to the point where they fall out and stop growing altogether? They miniaturize to a certain extent but then stabilize in a miniaturized state and are still retained (hence why you don’t see people with DUPA develop totally bald scalps because the hair is still there, just much thinner). Well, can the same thing occur with patterned hair loss? Where the hairs in the thinning areas of the scalp (vertex and/or hairline depending on the Norwood level) miniaturize to certain degree but then stabilize at that point and don’t continue to miniaturize to the point that they fall out and totally stop growing altogether? Or in patterned hair loss, miniaturizing hairs in a thinning area of the scalp will most definitely shrink to the point of no more growth?

You are drawing a lot of conclusions about DUPA. DUPA may be another form of Senile Alopecia or just a variation of genetic hair loss?  I don’t know, but I doubt it.  DUPA might progress over time, possibly leaving very little hair on the head.  i have seen this in women but never seen a man with such advanced DUPA that his entire head became very thin. DUPA is different because it impacts the Donor area and every other place on the head.  Someone can have genetically patterned hair loss and then develop DUPA, which I have seen. These men are in a tough spot, as their patterned hair loss may progress to full balding, leaving a fragile donor area.