Oh, and interestingly enough. It's genetic. My 3 children have it, too!

I've always had this condition.] Very rarely itches, it does get warm where I've been scratched. Oh, and that last picture looks neat. I'll bet it's when the welt is starting to go back, because all the redness around the swelling goes away well before the welt does. Also, if I touch the welt, it changes color to white momentarily. There's a name for that, but I can't remember off hand. It doesn't worsen the condition to write on my skin and it doesn't really last that long. Benadryl and Claritin don't completely prevent the swelling on my skin, but may have reduced the amount of swelling a little. Anyway, it doesn't interfere in my life and I've never thought about taking anything to stop it. And yes, like everyone's been pointing out, it absolutely does not hurt.