Not neat lines — big blotchy patches across my back
Sierra's dermatographia does not look like the photos. Leaning on a chair or getting warm brings up patches alarming enough to frighten her mum.
Sierra ·
- Living with it
- 1–3 years
- Main trigger
- Clothing pressure, heat and stress
- What helped
- Daily antihistamine, loose clothing and gentle skincare
My name is Sierra and I have dermatographia.
Mine shows up worst on my back. If I lean against a chair, or my shirt bunches up, or I get too warm, my whole back comes up in raised red patches — not neat lines like you see in the photos, but big blotchy areas that look alarming. The first time my mum saw it she wanted to take me to the emergency room.
It started fairly suddenly for me. One season my skin was normal, the next it was reacting to everything that touched it. There was no obvious cause, no new food, no new product, nothing I could point at and say "that's it."
The things that make it worse are pretty consistent: hot showers, tight clothing, stress, and scratching. The things that help are the boring opposites. I take an antihistamine every day. I wear looser tops and softer fabrics. I don't scrub in the shower and I keep the water warm rather than hot. Moisturiser straight after, while I'm still damp.
It hasn't disappeared. But it's gone from something that scared me to something I understand, and understanding it took most of the fear out.