Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pyogenic granuloma ?
    ### Response:
    Pyogenic granuloma are small, reddish bumps on the skin that bleed easily due to an abnormally high number of blood vessels. They typically occur on the hands, arms, or face. While the exact cause of pyogenic granulomas is unknown, they often appear following injury.
    