Allergic purpura is not a lifelong inability to be strenuously active, but can be moderately active under the guidance of a doctor after recovery. Allergic purpura can lead to the rupture of small blood vessels of microcirculation, blood leaking out of the subcutaneous, thus forming purple-red petechiae, or in severe cases, blood blisters. Most patients recover better after allergic purpura through treatment. During the treatment period, they need to pay attention to rest and avoid strenuous exercise, because during strenuous activity, muscle contraction may rupture blood vessels and lead to blood exudation, which is not conducive to purpura repair. After treatment, you need to rest for about 3 months, but not for life without strenuous activities. In addition, since allergic purpura is mainly related to allergy, it is recommended that patients consult the dermatology department of the hospital to identify the allergens, avoid contact with substances that can easily cause allergy in general, and take anti-allergy drugs under the guidance of the doctor if necessary.