Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lymphocytic vasculitis ?
    ### Response:
    Lymphocytic vasculitis is one of several skin conditions which are collectively referred to as cutaneous vasculitis. In lymphocytic vasculitis, white blood cells (lymphocytes) cause damage to blood vessels in the skin. This condition is thought to be caused by a number of factors, but the exact cause of most cases is not known.
    