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