I've had this thing for like 9 months now and after seeing my GP he thought it was some type of allergic reaction to something and recommended antihistamine to keep it at bay (which it does to a degree). I haven't seen him again since, but I did do some Dr Googling and I'm convinced it's Dermographism. The test for it is rather simple lightly scratch a pattern on your skin and then watch over the period of 30 minutes your skin erupt in an allergic type reaction following exactly the pattern you have made.
You can google image search and see some pretty wild stuff that people do with it (body art included ) .
I have yet to see my GP about my hunch, but I will be hitting my Endocrinologist with my suspicions in a weeks time. The only problem is even if they confirm that's what it is Dr Google doesn't know much about it, like how it starts or how and why it suddenly stops.
The only good things I have found out about it is it's nothing dangerous or life threatening, but it can be [censored]ing annoying sometimes. I have found all sorts of anecdotal suggestions about what might cause it one of which is major stress which I definitely ticked that box back then, but who knows?
So I'm wondering has anybody here ever come across this strange ailment or know someone who has, and what if anything they did helped get rid of it?