@digitag tweets related to: Skin Conditions, Art, Dermatographia, Canvas, Gallery

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This young woman has a rare skin condition known as dermatographia. This is an immune system skin hypersensitivity that releases histamine which is the chemical (neuro-transmitter) your body produces when you're having an allergic reaction. High levels of histamine cause this woman's blood vessels to dilate and make the vessel walls abnormally permeable and this causes the welts to appear.
Andrea Graziano Twitter

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Andrea Graziano

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