Anaphylactic purpura can be eaten if you are not allergic to duck eggs, but not if you are allergic to duck eggs. Allergic purpura belongs to type III allergic reaction, which is an IgA-type antibody-mediated allergic reaction, with damage to capillaries and small vasculitides, and its features may include non-thrombocytopenic cutaneous purpura, but also with arthralgia, abdominal pain, and renal lesions. The etiology of allergic purpura is more complex and has a certain relationship with food allergy. Therefore, if it is found that patients with purpura are allergic or intolerant to duck eggs, they should not eat duck eggs again. If, after examination, it is confirmed that there is no correlation between purpura and eating duck eggs, then duck eggs can be eaten without any problem. Generally speaking, there is no definite contraindication for allergic purpura, it mainly depends on whether one is allergic to a certain food or not, and one only needs to avoid the food that one will be allergic to.