Allergic purpura

Allergic Purpura is also called hemorrhagic capillary poisoning or Henoch-Schnlein syndrome. It is a common capillary allergic disease. The main pathological basis is extensive capillaritis. The main clinical manifestations are skin purpura, gastrointestinal bleeding, joint swelling and pain, and nephritis. A few patients also have angioedema . Some patients may have recurrence after re-exposure to allergens. The degree and outcome of kidney involvement are important factors in determining prognosis. Allergic purpura can occur at any age. It is more common in children and adolescents, especially in preschool and school-age children. Infants less than one year old are rare, and men are more than women (about 1.4 to 2.1).