How to deal with a high fever for three consecutive days? High fever is a common disease symptom. If you have a high fever for three consecutive days, you need to take timely measures. This article will elaborate on the following four aspects. Maintain adequate fluid intake During a high fever, you are more likely to sweat, and your body will consume too much water, leading to dehydration. Therefore, maintaining adequate fluid intake is particularly important. You can drink water, boiled water, mineral water, fruit juice, etc. You can also consume foods with high water content in moderation.