Dealing with dermatographism: anyone else have this?

So, here’s my situation: after finishing a ten-day course of penicillin antibiotics, I broke out in hives all over my wrists and palms. It eventually settled down once I was given some injections of ibuprofen and started taking Benadryl.

However, now I’ve developed something called dermatographism. Every single time I scratch myself—even if I just apply a little extra pressure—a red mark appears on my skin. It doesn't happen instantly, but after a minute or two, there's this visible trail left behind. It isn't intensely itchy or swollen at first.

But, if I keep scratching, things spiral out of control. The itching becomes unbearable, and all those old urticaria symptoms come rushing back—that stinging heat and swelling that feels just like a bad case of poison ivy.
I’ve never been sensitive like this before; now, even the slightest touch leaves a mark. I feel like I could literally draw pictures on my own skin.

Does anyone else here recognize what I'm going through?
Do you think this will clear up once the penicillin is completely out of my system? I assume it should be gone by now since it's been a month, but I wonder if the medication triggered some sort of lasting reaction in my body. I’ve read conflicting things about whether dermatographism is temporary or if it can become a permanent fixture.

My doctor wants to send me in for allergy testing, but honestly, I don't see any obvious connection between these marks and anything I'm eating.

What would you all suggest I do next?

Amy Rodriguez59 said:My doctor wants me to go in for allergy testing. Honestly, I just don't see how there's any connection between these specific triggers and what I actually eat...

What do you guys think I should do?

Keep in mind those tests aren't just about food—they check for medications and all sorts of other environmental allergens too. If I were you, I'd definitely go through with it...

Sensitivity and itching can hang around for a few weeks. Taking an antihistamine—something like Benadryl or whatever you've got in the medicine cabinet—usually helps smooth things over.

I’m dealing with the exact same thing... I actually went to see my doctor about it once, and she just brushed me off, saying it was all stress-related and would eventually just go away on its own. Well, newsflash: it didn't. It’s been years, and honestly, the only time it really shows is when I scratch at it... it leaves this mark that looks like a scar, and then it slowly fades out...
I’ve kind of just accepted it by now... but then I randomly stumbled across this woman online who actually turned it into a form of art...

''My skin tends to get red and swollen quite easily. I suffer from dermatographism—it's this condition where my immune system gets hyper-sensitive through my skin, releasing a ton of histamine. That causes my capillaries to dilate and creates these welts, all just from a little bit of scratching.''