Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Spastic quadriplegia retinitis pigmentosa mental retardation ?
    ### Response:
    What are the signs and symptoms of Spastic quadriplegia retinitis pigmentosa mental retardation? The Human Phenotype Ontology provides the following list of signs and symptoms for Spastic quadriplegia retinitis pigmentosa mental retardation. If the information is available, the table below includes how often the symptom is seen in people with this condition.
    