Hello. Thanks for writing to us at healthcaremagic I will keep a possibility of Dermographism Or Physical Urticaria. It is characterized by pale or red, swollen, linear welts that develop on stroking the skin Or along scratch lines. It is idiopathic and chronic and is common in those who have a personal or family history of atopy. Treatment is symptomatic with single oral dose of an oral antihistamine e.g fexofenadine, loratadine, olopatadine. These are prescription antihistamines. An OTC oral antihistamine e.g cetrizine may also be used for the same purpose. A topical soothing lotion e.g calamine may be used to calm down the rashes as they arise. Regards