If the child has recurrent fever, it does not exclude the possibility of leukemia. First of all, the child should have a routine blood test to see if there is any abnormality in the white blood cell count. If it is indeed leukemia, chemotherapy will be administered as soon as possible. However, it cannot be ruled out that other causes of low fever, not always leukemia, such as connective tissue lesions, such as rheumatic fever or systemic lupus erythematosus, may also cause a low fever. In the case of tuberculosis, a low fever with coughing or night sweats may also occur. In addition, children with respiratory infections may also have a low-grade fever, and specific tests should be done to confirm the diagnosis.