For me it happend very, very slow then one day I almost $#iT myself. Yes I was in denial and don't let this happen to you.
I knew I had a bit of a slow recession on my right temple for years, what people did not tell me was that the crown was thinning slowly at the same time- not even my hair dresser told me. This probably started when I was about 28, I thought it was from the gym supplements I was taking- Testosterone booster like Tribestan. Anyway I just watched it for a while hoping it wouln't get worse, it was not visible in public due to a comb over. By the time I was 32 the crown was becoming very visible and still no one said anything including my GF at the time, even my mom noticed and said nothing. Then a year or so later a friend started goofing on me saying I was starting to look like a bald friend of ours. Others would say "nice weave" but I was to ignorant to understand at the time.
8 months went by and I went camping in August, we spent the whole day out in the sun- a few days later I noticed my crown was peeling. I just pulled chunks of peeled skin from my crown- WTF. When I finally got a mirror and looked I was horrified and no one even told me over all the years. Being an ill informed newbie I ordered Crinagen for DHT ,Tricomin for growth and Nioxin products not a bad choice. I was also a mark for any snake oil salesman that had an ad on the internet. That worked a bit.
Anyway once I realized what boat I was in I took a closer look and realized how thin my overall hair had become. It was always super thick to the point were I could not control it, I never noticed excess shedding just a bit of recession, upon closer look I noticed great recession, overall thinning and a crown that was showing.
To make this long and boring story positive-
Scrutinize your hair closely everyday and make sure you know what condition it is in. If I had known about my problem and this site years ago I would have kept valuable hair that is now gone forever. I had a disease called denial and it took its toll. Boy if I had those early stages back.....
Really doesn't Matter though I still get all the pussy I can handle