I was being treated for acne about 20 years ago with the Obagi system, which was prescribed by my dermatologist. This involved using retin-a and hydrocortisone cream. My skin became very red and after several months of use, my dermatologist told me I had rosacea. I had never heard of it before. No one in my family has it. I have long suspected it was caused by that treatment. I will say that it has gotten better through the years, though it will flare up sometimes. I avoid the sun, wear sun screen, have tried all the prescriptions. I have to be careful what I put on it, no scrubbing or harsh cleansers. A beta hydroxy lotion from Paula’s choice seems to help.