Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Blue rubber bleb nevus syndrome ?
    ### Response:
    What are the signs and symptoms of Blue rubber bleb nevus syndrome? Symptoms and severity of blue rubber bleb nevus syndrome varies greatly from person to person.  In general, blue rubber bleb nevus syndrome is characterized by skin spots (nevi) that may be few to hundreds in number.
    