Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Phobias ?
    ### Response:
    A phobia is a type of anxiety disorder. It is a strong, irrational fear of something that poses little or no real danger.    There are many specific phobias. Acrophobia is a fear of heights. Agoraphobia is a fear of public places, and claustrophobia is a fear of closed-in places.
    