First of all, you should know what you are allergic to, one is the food source and the other is the environmental factor. So you must start with common allergens and do a good job of prevention rather than treatment.
Edible: patients with henoch-schonlein purpura should avoid animal high-protein diet and foods containing preservatives. Eat more foods rich in vitamin C.
Taboo: Never eat spicy food. If the patient belongs to allergic purpura, special attention should be paid to staying away from allergens. It is generally not recommended to eat raw, cold and hard, fried and indigestible foods, fish, seafood, bean products and dairy products, including all kinds of snacks. You can eat some fresh fruits and vegetables at ordinary times, but don't eat out-of-season fruits.
For the latest treatment plan, you can poke official website below for help.