Allergic purpura should never be taken lightly. It is recommended to receive comprehensive examinations and treatments at a regular hospital. Pay attention to daily diet and avoid consuming animal proteins, including chicken, duck, fish, shrimp, milk, and various meats. After treatment, it is only after the purpura disappears for a month that animal protein intake can be gradually resumed. Foods should be introduced gradually to ensure safety and to identify possible allergens. In addition, avoid cold air and crowded environments, do not engage in severe exercise or overexertion, to reduce the risk of infection. Infection may trigger a recurrence of purpura. Generally, if the condition remains stable within three months, the chance of recurrence will decrease. If the purpura persists for more than three months, the risk of recurrence will increase.