Before this rash started I had an intense itching on my upper back for quite some months but nothing was visible with the naked eye except some tiny red and purple dots, like those which are seen when someone is vitamin C deficient – but I knew I wasn’t.
I bought a USB digital microscope for my PC, so I could look more closely and saw a very fine white coating affecting my fine body hair. I epilated every scrap off and the itching ceased.
I did notice at the time, using this microscope, that I had a crop of small red and yellow marks under the surface of my skin.