These Photos are Proof of How Powerful and Unpredictable Genetics Can Be
Dermatographia and Scratch Scars
Some things just exceed our imagination, such as this one. At first glance, it looks like this person decided to get a strange tattoo on the arm. However, that is not the case, as this results from a condition called dermatographia. This skin disorder causes raised, inflamed lines on even the smallest scratches.
Simply put, dermatographia makes the skin allergic to scratches, causing these lines, which could last for a long time. While it can be interesting to trick people with and does not cause any greater harm to the body, it can be extremely uncomfortable to experience every time you get scratched.
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