Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Anxiety Disorders ?
    ### Response:
    Excessive, Irrational Fear Each anxiety disorder has different symptoms, but all the symptoms cluster around excessive, irrational fear and dread. Unlike the relatively mild, brief anxiety caused by a specific event (such as speaking in public or a first date), severe anxiety that lasts at least six months is generally considered to be problem that might benefit from evaluation and treatment.
    