I believe I have this phenomenon. Where I was stabbed 2 years ago in the calf area; exists my largest psoriasis sore. I mentioned it to a research assistant at a dermatology clinic and she did not believe me.

Yes this phenomenon has occurred to me. Especially when I scratch my skin, new lesions appear at the site.

There is also the reverse "Koebner Phenomenon" which is not as well documented in medical literature.

What is this, reverse Koebner?

When I got my ears pierced about 10 years ago we thought I was allergic to the metal because I had to remove the earrings because of psoriasis. Later we heard about the Koebner phenomenon and figured that was the problem. I have gotten my ears pierced since and they are fine.

When I was a teenager, I got off a motorbike on the wrong side and burnt the back of my calf. It was one of the first places I ever found a plaque. So maybe there is something to the theory.

I was only recently diagnosed with psoriasis of the soles of my feet, although I feel sure I have had it in lesser form for 25 years. With 20/20 hindsight I am certain that the areas of the disease are the sites of former injuries - DDT rubbed in at age 5, frostbite at about 16, extreme long hours of work causing severe swelling at age 43, and swelling from several drug reactions.

I have a recent scrape on the left calf which also appears to be turning into a psoriatic site.

I am finding that as an acne sufferer I will develop patches where a pimple once was.

A l'endroit ou je me brule, après guérison la cicatrice devient une plaque de psoriasis.

I've had P for close to 30 years now (since I was 8) and I've seen it all, good and bad. I have a question about the Koebner Phenom - I have had 2 kids, both by cesarean section and I now have psoriasis in the fold where the incision was made both times ( I could also use to loose a few kilos) LOL, BUT my question is...how do you treat P in this area, all my creams say Do not apply in skin folds, blah, blah blah. Currently on Dovonex, one side effect is it thins the skin - I have noticed this on my elbows and knees, VERY thin skin in these areas. Being a lady, it's not the most romantic thing to have the dreaded red, inflamed, ugly skin "down there" if you know what I mean. Anyone else with this issue and how do you deal with it??
Thanks

I've heard of this and it definitely happens to me all the time. I notice that I tend to get psoriasis on the back of my finger under my wedding ring especially. It's really irritating as it means that sometimes I have to go without wearing my ring until it goes down again :(

Years ago before I had psoriasis I had a lesion on my arm, I was worried about skin cancer,went to a derm,no problem we'll freeze it off they used that stuff in a canister,anyway two weeks later, spots all over,went back,they finally did a biopsy,guttate psoriasis,they insisted I had strep throat,which I know I didnt, but I found out later Trauma to the skin, when they burnt that psoriasis spot, it triggered everything.I now have plaque and inverse in the folds of skin. To SH my new derm. recomended Protopic which I only use under the breast and any skin folds lightly it clears it up pretty good.I think it is much milder and doesn't seem to thin the skin.

I have had Plaque Psoriasis since 2005. 7 months ago I cut my ankle with a dull razor. The healing spot slowly healed and turned into a Plaque spot. It has only gotten bigger since.