Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Syndrome of inappropriate antidiuretic hormone ?
    ### Response:
    What are the signs and symptoms of Syndrome of inappropriate antidiuretic hormone? Symptoms of syndrome of inappropriate antidiuretic hormone include water retention and low sodium level. Low sodium levels may cause lethargy and confusion. Severe low levels of sodium in the body may cause muscle twitching, seizures, stupor, coma, and death.
    