Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Psoriatic juvenile idiopathic arthritis ?
    ### Response:
    Psoriatic juvenile idiopathic arthritis is a subtype of juvenile idiopathic arthritis that is characterized by both arthritis and psoriasis. Other signs and symptoms may include dactylitis (inflammation and swelling of an entire finger or toe); nail pitting or splitting; and eye problems.
    