Diet Management of Henoch-Schonlein Purpura The dietary principles of Henoch-Schonlein Purpura are: on the one hand, prevent re-allergy; On the one hand, it protects and tonifies the kidney and reduces kidney damage. The specific principles are as follows: 1. Children with henoch-schonlein purpura should immediately stop eating foods that may cause allergies, such as milk, fish, shrimp, crab, mutton, seafood and other exotic protein, and avoid contact with suspicious allergens. 2. The diet should be light, nutritious, easy to digest and absorb, and avoid some improper eating practices. Avoid fatty diet and overeating every meal, so as not to increase the burden on the gastrointestinal tract and induce or aggravate gastrointestinal bleeding. People with severe abdominal pain or positive fecal occult blood should fast if they eat liquid food and have obvious bleeding in the digestive tract. 3. Children with henoch-schonlein purpura should be treated with caution when they have abdominal pain and bloody stool. Try to use less coarse grains or foods with more crude fiber, such as celery, rape, bamboo shoots, pineapple, etc., which can damage gastrointestinal mucosa and induce or aggravate gastrointestinal bleeding. 4. Avoid alcohol, tobacco and spicy food, so as not to induce or aggravate gastrointestinal bleeding. When can I eat meat, eggs, milk and other foods? This question is often asked by parents of children in clinic. Generally speaking, when there is no new skin purpura for more than 10 days, you can gradually increase food such as meat, eggs and milk, one at a time. If there is no new skin purpura after 2 days of trial, new food can be added. Compared with egg milk, the probability of meat allergy is smaller, so try eating meat first. Our clinical experience is that diet should be managed at different levels and individually: different levels, lean pork → eggs → milk → freshwater fish → other protein foods. The chances of allergies decrease in turn. Individualized management: Some people must be allergic to something, so contact is forbidden. Stubborn patients with cutaneous purpura have strict requirements on taboos and contact items, including all kinds of spices, new clothes, new books and new toys. Why does allergic purpura have renal lesions? Henoch-Schonlein purpura (Henoch-Schonlein purpura) is an allergic systemic necrotizing vasculitis with the most abundant capillaries in the kidney, and the glomerulus is composed of capillary loops, so Henoch-Schonlein purpura is prone to kidney injury. Pathologically, more than 90% patients with Henoch-Schonlein Purpura have renal lesions, only mild to severe, and about 30%-60% will have clinical symptoms (hematuria or/and proteinuria, etc. ). The pathological basis of Henoch-Schonlein Purpura is that the immune response leads to systemic vasculitis and the blood is in hypercoagulable state. When the kidney is involved, microthrombosis appears in glomerular capillary blood, accompanied by the deposition of immune complex mainly between glomerular capillary wall and mesangial IgA. Pathological manifestations are as follows. Therefore, clinically, we use western medicine drugs for inhibiting immune abnormalities and anticoagulation, and Chinese medicine drugs for promoting blood circulation and removing blood stasis. Is the occurrence of allergic purpura nephritis regular? Scientifically speaking, the occurrence of Henoch-Schonlein purpura nephritis is irregular. The incidence of henoch-schonlein purpura is common in children and adults (> 20 years old) under 10. It occurs in the cold season and occurs frequently in winter and spring. About12 patients have a history of pioneer infections such as bacteria and viruses, and about14 patients are related to fish and shrimp allergies or preventive injections and drugs. Most patients have a benign self-limiting process, and most of them are cured within a few weeks. However, some patients have recurrent attacks or delayed them for months or years, and about 50% patients have recurrent attacks. Henoch-Schonlein purpura nephritis usually occurs within 2 ~ 8 weeks after Henoch-Schonlein purpura, and the incidence rate can be as high as 30% ~ 60% several months later. Some cases occur before Henoch-Schonlein purpura or 2 or even several years after Henoch-Schonlein purpura. The most common manifestation is isolated hematuria. Proteinuria is mostly mild, but it can also develop into massive proteinuria, which is manifested as nephrotic syndrome. In a few cases, acute renal function deterioration will occur. Some patients may have hypertension and edema. Children with henoch-schonlein purpura are prone to kidney problems in four situations: (1) those with more early extrarenal symptoms. (2) those with obvious symptoms of digestive tract. (3) Recurrent skin lesions appear in batches. (4) Male, older children. Provided by Dr. Tiantao.