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A few times I would see unusual scratches on my body. They are usual in a design like x or circle or str8 lines. I know I did not do it. What is that?

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In brief: ?Dermatographism

It is unusual for shapes like this to develop due to an internal problem. More commonly they are due to an external trigger, maybe sitting on a seat edge can cause a line, or over a button can cause an x like shape.
Dermatographism, a physical urticaria or hives, may be responsible.

In brief: ?Dermatographism

It is unusual for shapes like this to develop due to an internal problem. More commonly they are due to an external trigger, maybe sitting on a seat edge can cause a line, or over a button can cause an x like shape.
Dermatographism, a physical urticaria or hives, may be responsible.
Dr. Roman Bronfenbrener
Dr. Roman Bronfenbrener
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