Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Thrombocytopenia ?
    ### Response:
    Many factors can cause thrombocytopenia (a low platelet count). The condition can be inherited or acquired. "Inherited" means your parents pass the gene for the condition to you. "Acquired" means you aren't born with the condition, but you develop it. Sometimes the cause of thrombocytopenia isn't known.
    