Purpura generally refers to allergic purpura, patients who are still growing red spots while taking medication may not be avoiding allergens. If allergens are ruled out, and such cases still occur when taking medication, you should go to a regular hospital and add or change medication as prescribed by the doctor. The premise of the treatment of allergic purpura is to identify the allergens and avoid them. If you continue to be exposed to allergens while taking the medication, you may continue to develop red spots. Therefore, actively searching for the causative factors and keeping away from the allergens are the main treatment measures. If the red spots continue to develop while taking the medication after avoiding the causative factor, it is important to determine if the medication is the cause. Should be combined with their own situation, ask the doctor’s guidance, and follow the doctor’s instructions to add or reduce the dose of drugs, or change the drug. The patient of purpura during the treatment, should also follow the doctor’s advice regular review, in order to understand the recovery of the disease.