Baby fever 38.2 ℃ asleep must pay attention to, can be seen in intracranial infection, toddler rash and other cases, “whether it is important” need to be analyzed in conjunction with the condition of judgment, such as intracranial infection can appear persistent elevation of body temperature, convulsions and other symptoms, is considered to be in critical condition. 1. intracranial infection: such as bacterial meningitis, viral encephalitis, clinical fever of 38.2 ℃ fell asleep phenomenon, for such babies can appear persistent elevation of body temperature, convulsions and depression phenomenon, the progress of the disease can be serious neurological sequelae, often considered critical. 2. Early childhood acute rash: mostly caused by human herpesvirus infection, the above phenomena can occur clinically, usually the mental response is still good, most of the fever 3 to 5 days after the appearance of rash, body temperature is normal, the prognosis is good, generally “does not matter”, but also need to be evaluated by a physician to judge. 3. Hematologic system: such as acute leukemia, the above phenomenon can occur, for such babies may be accompanied by anemia, skin rash and other symptoms, usually considered high degree of malignancy of such diseases, generally “important”, need to be actively treated. 4. Other: such as Kawasaki disease: babies can appear the above phenomena, for such babies with serious conditions can appear heart coronary artery dilation, etc., is generally considered “important”, need to actively seek medical attention, a clear diagnosis and then give formal treatment. It is recommended to actively consult the doctor, by the guidance of a specialist physician treatment.