Etiology and clinical manifestations of anaphylactoid purpura

The etiology of this disease is still unclear, and at this stage it is believed that it is related to autoimmune reaction caused by certain allergenic factors. Could be a pathogen. bacteria, viruses, parasites, etc. antibiotics, sulfa drugs, antipyretic analgesics, etc., food (Fish, shrimp, crab, egg, milk, etc.), pollen, insect bite, vaccination, etc. as sensitizing factors, so that sensitive bodies produce allergic reactions, mainly immediate allergic reactions and antigen-antibody complex reactions, thus causing a series of injuries. The incidence of this disease has family and ethnic tendencies. Its clinical manifestations are skin purpura, accompanied by abdominal pain, hematochezia, joint pain, swelling, limited mobility, hematuria, proteinuria and renal function damage.