Thinning on Top, Sides, and Back of Head

Hi

I am a 23 year old male. Over the last 6 months my hair density has decreased to about 40% on top of my head (mpb zone), but also the sides and back (to maybe 70%). I went to a doctor 2 months ago who diagnosed me with mpb because of observed lower density in mpb zone, she did however not look for miniaturization (I asked her later about this). I have been on propecia since then, and may have noticed an increase of shedding, but this could of course also be due to accelerated loss.

I didnt realize the sides and back were thinning until recently. Another observation: The hairline in back of my head has always contained a lot of short 3 cm hairs. These hairs have started to fall out extremely fast, it comes out 6-9 by just pulling them slightly.

My questions:

1) Does this sound like DPA, DUPA or something else?
2) Can propecia cause shedding in sides and back?
3) Will a DUPA patient have any benefit of hair cloning (whenever is comes out)?

Thank you

It might be DUPA, and mapping out your head for miniaturization will show miniaturized hairs in the sides and back reflecting over 20% of the hair population if it is DUPA (Diffuse Unpatterned Alopecia). Propecia should have no impact on the permanent hair in the sides and back of your head, so even if Propecia caused temporary shedding and hair cycling, there will be no impact on the permanent rim of donor hair. Hair cloning is still a pipe dream at this point, but if it were here today, one would clone the non-DUPA hair so it would be a reasonable alternative to becoming bald.

Be sure that what you have is actually DUPA before you get depressed. It may simply be other causes of hair loss, so be sure that you also get a medical workup for other causes of hair loss (e.g. thyroid disease).