Patients with purpura can eat potatoes. Purpura is a bleeding disorder that is caused by the rupture of capillaries, platelets and other factors, which cause bleeding spots on the skin with a diameter of 3-5mm. The most common cause of purpura is allergic purpura, which is caused by an allergy to a foreign protein. And the main component of potato is starch, which is glucose, so it will not cause allergic purpura and patients can eat it without worry. In addition, patients with immune thrombocytopenic purpura are caused by autoimmune disorder and produce antibodies related to anti-platelet, which leads to platelet destruction. Therefore, patients with immune thrombocytopenic purpura can also eat potatoes. In addition, there is another clinical purpura called simple purpura, which is commonly seen in women of reproductive age and is caused by changes in estrogen concentration. So, eating potatoes will not affect simple purpura either.