Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) WaterhouseFriderichsen syndrome ?
    ### Response:
    WaterhouseFriderichsen syndrome is adrenal gland failure due to bleeding into the adrenal gland. It is usually caused by severe meningococcal infection or other severe, bacterial infection. Symptoms include acute adrenal gland insufficiency, and profound shock.
    