The first way is cold compress: Whenever skin allergies occur, the most intolerable is the skin itching, often scratch is not, do not scratch is not, let a person fidget. Then if you want to stop itching, you can use cold compresses to relieve the itchy condition, you can use ice on the affected area, the itching symptoms will be significantly reduced, the condition can be eliminated redness, but this is not the ultimate solution, can only be done as a first-aid treatment measures to use, in order to completely solve the itch, you must go to the hospital in a timely manner to diagnose and treat the condition of the exacerbation of the disease.