What Causes Reddish Skin In The Upper Chest And Neck?

I developed red skin on my upper chest and neck about three months ago. I take testosterone injections and exercise five times a week. I also take several supplements to include amino acids, pharmaceutical fish oil, and assorted vitamins and minerals. I've had chronic fatty liver (NAFL), slightly high liver enzymes, and take milk thistle as a remedy. The red skin on my upper chest looks like tiny blood vessels. Any ideas what this redness is due to?