Khan Academy on a Stick
Henoch-Schonlein purpura
Henoch-Schonlein purpura (also known as anaphylactoid purpura) is a type of vasculitis that affects small blood vessels and characterized by elevated immunoglobulin A (IgA). Symptoms of this disease include skin lesions, joint pain, blood in urine (hematuria), and abdominal pain. Health professionals diagnosis Henoch-Schonlein purpura through blood tests (elevated IgA). This disease is often treated with steroids.
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