The main reasons that may cause leukopenia are: one drug is a substance, such as antipyretic and analgesic drugs, sulfonamides, radiotherapy and chemotherapy drugs, etc.; The second is viral infection, such as influenza and viral infection; Third, suffering from immune system diseases, such as rheumatoid arthritis; Fourth, contact with toxic and harmful substances, such as benzene compounds in paint and glue.

If you take cold medicine or virus infection, it is transient, and it doesn't matter. If you suffer from immune system diseases or have a history of benzene exposure, you should go to the hospital for treatment because of the high attention.