Are Thinning Temples Part of a Mature Hairline?

Dear Dr. Rassman,
I have been on propecia for close to 3 months now, and in that time I seemed to have noticed the temples thinning more than they ever had. The hair above the sideburns (that comes to a point above the eybrow) is also seemingly thinning. I notice much more blonde hair in these areas, yet I am a fairly dark haired person. Could this be just evidence of a maturing hairline (although I feel it is going beyond that) or could it be evidence of a shed from propecia? Or could it have probably happened anyway and hopefully propecia is slowing it? I’m sure you can’t tell me for sure, but any insight would be appreciated. Thank you.

There is no way to answer to your question without a good physical exam, which includes a miniaturization study. To better assess the hair loss you are noticing we would need to compare your miniaturization state before you started Propecia and your miniaturization state now. Moreover, Propecia is not reported as effective on your frontal hairline and your temples (although I am not sure that I believe that it is completely ineffective). Thus, your hair loss may just be a part of your male pattern hair loss or your maturing hairline (depending on your particular pattern).