I had posted a while back thinking I had an allergic reaction to either my bra, or chlorella. The rash spread from my chin to my feet. I've had a miserable time of it to say the least. Turns out to be pityriasis rosea. Not everyone who gets this rash is itchy. I itch like crazy. Ironically, this rash is nicknamed "the christmas tree rash", because of the pattern it takes down the ribcage. Cute, huh. I don't look cute, though. Or feel cute. I've read that it may be caused by a viral infection.(maybe herpes virus 6 or 7) It is supposed to go away on its own in 6 to 12 weeks. Joy. Anyone else out there been afflicted with this rash?