Receding Hairline Without Miniaturization?

Hello Doctor,

I have an important question about miniaturization. Is it possible to have a hairline that keeps receding pass NW2 and still show no miniaturization? Also, NW3 is considered early balding but is that only when miniaturization is present? If someone is at NW3 or NW4 with no miniaturization would Propecia be recommended or not? Also, why is it that some young adults start losing hair early?

Thanks

Miniaturization sometimes is not the forerunner for balding at the Norwood Class 3 or 4 stage, but it usually is present if looked for. The change for a Class 2 to an early 3 pattern may not have miniaturization, but the further back the pattern becomes evident, the more miniaturization will be seen.