I understand there are receptors in the skin (and other places) that transform testosterone to DHT, and am not sure if the effect on the skin is a potential cause or a side effect of the condition.
Perhaps finding out what the triggers are that effect the sebaceous glands that @Scotsman mentioned can provide a direction. With that, as a youth and younger man (well before propecia), I had noticeable and constant swelling of the sebaceous glands behind my ears and on my scalp, and was treated for it, but this ceased post very short term use of propecia. I never attributed a connection between the two, but again, the timing coincides. I will be seeing the ear-nose-throat doctor who treated me years ago to see if he can lend anything to this conversation.
With that, I think we all need a more detailed list of potential symptoms we suffer from, and their severity, and attempt to better understand and define them, potentially associating common causes in hopes for a better understanding of PFS.
It’s clear to me that dry eyes and dry facial and other skin, along with reduced “oil” production are symptoms. Also (and now minor) hair loss has stopped, but dandruff had started, likely due to the dry skin.
I would speculate further that the changes in facial features mentioned by some could be skin related and not bone loss related, and the changes of the skin on the penis and scrotum may be a result of reduced sebum production. I suggest the facial features change are skin related and not bone related, because if they were bone loss related, I’d expect teeth to start falling out (I have all my natural teeth, at age 50).
Again, these are speculations, and I’ll confirm with my dermatologist and others, once I get better health insurance coverage in January 2019.