The staff at the National Museum of Health and Medicine in Washington DC have uploaded to Flickr a large collection of photos from its archives available under a Creative Commons license. This is an example of dermatographic urticaria from the year 1945:
"Dermographia on a patient's back. This is not a scar; the raised marks are caused by scratches or irritation to the skin and aren't permanent."
Related reading:
"Dermographia on a patient's back. This is not a scar; the raised marks are caused by scratches or irritation to the skin and aren't permanent."
Related reading:
Flickr user: "I have a weird allergy called "Dermatography" where the skin welts up from contact"
"Palmaris slapus abdominus" - more commonly known as dermatographic urticaria http://goo.gl/JMM6e
Dermatographic Urticaria (Skin Writing) http://goo.gl/5ykI8 and Flickr group
Taking dermographic urticaria and making it "art" http://goo.gl/QEkYx
Dermatographic Urticaria (Skin Writing) http://goo.gl/5ykI8 and Flickr group
Taking dermographic urticaria and making it "art" http://goo.gl/QEkYx