Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Hemophagocytic lymphohistiocytosis ?
    ### Response:
    What are the signs and symptoms of Hemophagocytic lymphohistiocytosis? The signs and symptoms of hemophagocytic lymphohistiocytosis typically develop during the first months or years of life. However, in rare cases, affected people may not show symptoms until later in childhood or even into adulthood.
    