Doctor says age spots. Won't recommend a derma. Told symptoms to mayo clinic, they offered me an appointment, but no mayo clinic within 3,000 miles.
Brown spots of oddly shapes. Each one has it's own unique shape. After exposure to sun becomes dry and itchy, can scrape it off. Underneath is... nothing just air pocket and skin underneath. Itched off piece looks honestly like a scab that just never fell off. Scar tissue underneath, rubbed Neosporin on it, scar tissue healed.
Also, when 'scabs' are removed, micro-brown fleckles under the scabs move too. I noticed their orientation change accompanied by waves of intense itching after scab removal.
Worst. spreads via oil contact with skin to other people! Afraid to touch people for fear to spread it!
I had it for many years didn't itch was dormant, started a job working outdoors in the sun a lot has made them spread all over!