Hello, I have been trying to figure out an odd skin rash or similar that I ve been dealing with for about 9-12 months. Every few weeks, but not seemingly connected to any understandable cycle or trigger, I have a really intense itchy, stingy feeling most often on my shoulder blades or back. Then within a day, I have about an inch or so long linear scab and then just a pinpoint past one end, there will be a red dot/scab. The site is very itchy for a couple of days. When the scab comes off, there s no line, but usually three or four pinpoint dots, similar to the first one. One of the dots usually persists for a couple more days. Then it goes away and everything heals for a week or two. Sometimes I have two or three lines at the same time in a small grouping. I ve had them on my shoulder, upper arm, my knee,the base of a finger, and one on my wrists, but almost all are on my back and shoulder blades, where the seem to only move over a couple of inches from the previous site and have been moving across my back form right to left. It doesn t look like any pictures of scabies i can find, and the doctor I have seen says I must be scratching in my sleep - but I can t always reach the center of my back even when I am awake and it is always a dot-dash or line pattern.