Symptoms of high lymphocytes vary depending on the cause of the disease. For example, high lymphocytes caused by viral infections will be characterized by fever, chills, cough, runny nose, headache and vomiting. Common causes of high lymphocytes include physiological factors, viral infections, blood system diseases, etc. 1. Physiological factors: after strenuous exercise, lymphocytes will be mildly elevated, and this kind of elevation will not affect the body, and can be restored to normal after appropriate rest. 2. Viral infections: such as influenza virus infection, there will be fever, chills, cough, runny nose, headache, vomiting, etc. If not treated in time, it will lead to aggravation of the symptoms, which will seriously affect the function of the body. 3. Blood system diseases: such as acute lymphoblastic leukemia, there will be pale skin, weakness, dizziness, bleeding from skin and mucous membranes, and in severe cases, there may be intracranial hemorrhage, gastrointestinal hemorrhage, fever, and infections, etc., which often have serious consequences if not treated in time. For example, acute lymphoblastic leukemia treatment drugs include cyclophosphamide and desmethoxazole erythromycin. High lymphocytes alone can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results in order to make an accurate judgment, it is recommended that the cause of the disease under the guidance of the doctor to clarify the cause of the disease, the correct use of medication.