5 month old baby fever no fast way to reduce fever, may be caused by viral or bacterial infection, need to symptomatic treatment as well as the cause of the treatment, such as timely cooling, if necessary, to comply with the doctor’s instructions to use antibiotic drugs, such as amoxicillin as well as cefdinir and so on. 1. Symptomatic treatment: baby fever reaches 38.5 degrees above the need for timely cooling treatment, so as not to lead to febrile convulsions (due to high fever caused by convulsions convulsions), the use of antipyretic drugs under the guidance of a doctor, such as acetaminophen and so on. If 38.5 ℃ below the physical cooling, you can give your baby more warm water, reduce the clothing, you can give your baby a warm water bath, while monitoring the body temperature. 2. Treatment of the cause: need to actively take the baby to the regular hospital, clear what causes the fever, in targeted treatment, if it is a viral infection, due to the virus has a self-limiting, the course of the disease usually does not exceed one week, generally do not need special treatment, only need symptomatic treatment can be. If the fever is caused by bacterial infection, antibacterial treatment is needed, such as amoxicillin and cefdinir and other antibiotics can be used under the guidance of the doctor to treat. If the baby recurrent fever, you need to go to the regular hospital for further examination, to clarify the specific causes, and then targeted treatment.