Posted by: Patricia | 2020/02/05


Problematic itchy skin

Hi doctor, I have been having problematic and highly itchy skin for about 9 years now but my doctor tells me its not an allergy. My skin usually itches and when i scratch i have scratch marks wherever I have scratched but disappear after a few minutes, if any small scratch I get swollen in that same area with disappearance in a few minutes. I can actually write my name on my skin with my nail, please advise.

Expert's Reply


Allergy expert
- 2020/02/06

Your doctor is correct. You are describing a condition called Dermographism which is a form of Physical Urticaria, and this isn't caused by an allergy. You have an overabundance of skin Mast cells that release histamine easily when you rub or apply pressure to the skin. The condition may be chronic and you have to try and not rub the skin and take an antihistamine such as Cetirizine to control it.

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