The medication for allergic purpura should be determined based on the severity of the patient's condition. If the patient only shows symptoms like rashes, the focus should be on reducing the rashes, and medications such as compound glycyrrhizin and desloratadine can be used for their anti-allergic effects. If the main clinical manifestation of allergic purpura is joint pain, some non-steroidal pain relief medications can be added for pain relief. However, if the patient primarily exhibits involvement of internal organs, such as gastrointestinal involvement in allergic purpura starting with abdominal pain, or kidney damage marked by significant proteinuria, then corticosteroids and immunosuppressants should be considered for treatment. (Please use medications under the guidance of a doctor).