I had my "Photodynamic" skin treatment today on the top of my head, and the post title is how it's feeling right now.
When I first moved to California in 1982 I was an avid, regular beach goer. And I overdid it a few times.
They were two times when I got so sunburned my first summer here that the top of my head was purple.
YEARS later, I started noticing these hard, scaly patches on my poor old bald head, and went to see the Dermatologist. He proclaimed I had "Actinic Keratosis", and proceeded to blast several spots with Liquid Nitrogen to freeze them off.
That's how I've been having them taken care of for the last 12 years or so, but the last time I saw my Dermatologist, he suggested this method, as it usually gets rid of them once and for all.
They washed my scalp with some mild soap, gave it an alcohol scrub, and then dabbed on "Levulan" topical solution, and let me sit for about 30 minutes for the affected areas to absorb it. Then it was on with the goggles, and roll this 7-tube lighting fixture over me. It puts out a specific wavelength of UV, which activates the now absorbed chemicals. I had two 30 minute treatments with a leg stretching pause in between them.
Compared to the sensation of having LN2 sprayed on your skin, this was a walk in the park!
Minor itching/stinging after the light had been on for about 15 minutes, but that's all, even after the full one-hour treatment.
It may or may not get more pronounced over the next few days before the "bad" areas slough off, but so far it's way better than getting patches of your skin taken down to -320*F!
I have a follow-up visit in 8 weeks, and if there's a few spots they missed, they'll do it again.
Hopefully this will eliminate the LN2 treatments I had been getting....