Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Chronic Eosinophilic Leukemia ?
    ### Response:
    Signs and symptoms of chronic eosinophilic leukemia include fever and feeling very tired. Chronic eosinophilic leukemia may not cause early signs or symptoms. It may be found during a routine blood test. Signs and symptoms may be caused by chronic eosinophilic leukemia or by other conditions.
    