Roseola in infants is a common febrile exanthematous disease observed in toddlers and infants. Its primary characteristic is the sudden onset of high fever without obvious triggers, with body temperatures reaching 39 to 40 degrees Celsius. Typically, the fever lasts three to five days. During periods of high fever, the child may become irritable or even experience convulsions. Therefore, when confronted with high fever associated with roseola, appropriate fever-reducing treatments can be given. Generally, if the child's overall condition is good, physical cooling methods like a lukewarm bath, cooling patches, or the oral intake of traditional Chinese medicine that reduces fever may be chosen. In cases of persistent high fever—temperatures above 38.5 degrees Celsius at night or above 39 degrees Celsius—children who have previously experienced febrile convulsions may require appropriate fever-reducing medications, dosed according to the child’s weight.