Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Henoch-Schnlein Purpura ?
    ### Response:
    - Henoch-Schnlein purpura (HSP) is a disease that causes small blood vessels in the body to become inflamed and leak.  - HSP is caused by an abnormal immune system response in which the bodys immune system attacks the bodys own cells and organs. The factors that cause this immune system response are not known.
    