Miniaturized Hairs

Do they grow the same length as originial hairs?

In the early stages of androgenetic alopecia (first few years), miniaturized hairs grow almost the same length as original hairs (not quite but close). 

As time passes, and if androgenetic alopecia progresses, them miniaturized hairs grow in the scalp for shorter and shorter periods. In advanced cases, hairs affected by androgenetic alopecia grow for only a 2-3 months - and are very, very short and very, very thin. We call these "vellus-like" hairs rather than miniaturized hairs but they are a type of miniaturized hair.  Over time, vellus like hairs just don't grow any more.