Allergic purpura is an allergic inflammatory disease of capillaries and small blood vessels that occurs in preschool children and involves not only the skin but also the joint muscular system, digestive system, and urinary system. The causes of allergic purpura are complex, and infections and food allergies are common triggers or aggravating factors. Because the rash of this disease is easy to recur, and may appear kidney and gastrointestinal symptoms, causing a great psychological burden to patients and their families. Let’s learn together what exactly needs to be paid attention to in allergic purpura. The actual fact is that you can find a lot of people who are not allergic to the actual food, so you should limit the intake of heterogeneous protein (such as milk, fish, shrimp, crab, egg, beef and mutton, seafood, soybean products, etc.); diet to light and easy to digest food, avoid raw, cold, hard and coarse fiber food (such as celery, greens, pineapple, etc.), avoid eating too much, spicy stimulation The food will not increase the burden of gastrointestinal tract and induce or aggravate the gastrointestinal symptoms, when there are obvious gastrointestinal symptoms need to fast. When recovering from allergic purpura, no new rash for about 2 weeks or more can gradually increase a single food, 3-5 days without recurrence of the disease will add another. If there is a new purpura, stop eating the food, if there is no new purpura, you can eat the food. The approximate principle is usually to start with small amounts, adding non-crude fiber vegetables and fruits first, then vegetable protein, and finally animal protein. It is recommended that you should eat more foods rich in vitamin C (such as grapefruit, oranges, various green leafy vegetables, etc.). Furthermore need to pay attention to rest, moderate activity, avoid excessive activity, rest and activity alternately, rest as the main, gradually increase the amount of activity. Because allergic purpura can involve the kidneys, it is believed that there is no medicine to prevent kidney involvement, so regular urine examination is needed, etc.