Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Thrombotic Thrombocytopenic Purpura ?
    ### Response:
    Blood clots, a low platelet count, and damaged red blood cells cause the signs and symptoms of thrombotic thrombocytopenic purpura (TTP).
                
The signs and symptoms include:
                
Purplish bruises on the skin or mucous membranes (such as in the mouth).
    