Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of ARDS ?
    ### Response:
    The first signs and symptoms of ARDS are feeling like you can't get enough air into your lungs, rapid breathing, and a low blood oxygen level.
                
Other signs and symptoms depend on the cause of ARDS. They may occur before ARDS develops. For example, if pneumonia is causing ARDS, you may have a cough and fever before you feel short of breath.
    