High lymphocyte ratio is usually caused by viral infections, hematologic disorders and transplantation rejection.
1. Viral infections: such as mumps, rubella, measles, viral hepatitis, infectious mononucleosis. When the body is attacked by pathogens, lymphocytes, as a kind of immune cells, will show an increase in number, so there will be a high lymphocyte ratio.
2. Hematological diseases: bone marrow hematopoietic failure diseases, such as aplastic anemia, lymphocytic leukemia patients after chemotherapy, lymphocyte ratio can be significantly higher.
3. Rejection reaction of transplantation: After hematopoietic stem cell transplantation or organ transplantation, if rejection reaction occurs, the lymphocyte ratio will be high during the recovery period.
In addition, young children may have a high lymphocyte ratio, and it is recommended to go to the hospital in time to avoid delaying the disease and causing adverse consequences.