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