There is no absolute best treatment for a toddler with a fever of 37.8 degrees, it can be handled through the following methods, such as physical therapy, medication and so on. 1. Physical therapy: toddlers with a fever of 37.8 degrees is a low fever, if there are no other abnormal symptoms, it is recommended to give the toddler drink more warm water, which can promote the body’s metabolism, and at the same time, you can use a warm towel to wipe the forehead, armpits and other parts of the body, which can play a role in physical cooling. 2. Medication: If physical therapy fails to control the symptoms of fever or if the toddler’s temperature continues to rise above 38.5 degrees, it is recommended that the toddler be taken to the hospital as soon as possible and be treated with medication under the guidance of a doctor, such as ibuprofen suspension, acetaminophen drops, and so on. There are many reasons for a toddler to have a fever of 37.8 degrees, and parents are advised to take their toddlers to the hospital to clarify the cause of the fever and actively treat it.