Just something I have wondered for a few years, all through my teenage years I suffered with Acne and I tried every facewash under the sun, clearasil, nutregena, etc. I was also constantly on different anti biotics during these years for my acne, and latterly was on roaccutane - which did make my skin quite significantly redder.
I found the sun helped my skin when I was younger, in terms of it basically dried out all my spots. So over these years, I was a bit of a sun worshipper - however I always wore suncream and never got burnt.
Rosacea appeared for me, I think when I was around 24/25 and has worsened gradually since (I'm now 29 - nearly 30!).
I just wondered if there was any evidence that by using harsh chemicals on my face, combined with a constant flow on anti-biotics and sun exposure over the years could actually have caused my rosacea?