Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of HTLV-1 associated myelopathy/tropical spastic paraparesis ?
    ### Response:
    What are the signs and symptoms of HTLV-1 associated myelopathy/tropical spastic paraparesis? Signs and symptoms of HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) vary but may include: Progressive weakness  Stiff muscles  Muscle spasms 
    