Repeated high fever at night after taking ibuprofen to reduce fever indicates that the primary disease causing the fever is not controlled or the heat is not dissipated enough. It is recommended that the patient go to a regular hospital to avoid delay. During the treatment period, the need for continuous monitoring of body temperature, repeated high fever specific medication, need to consult a doctor in detail, under the guidance of the doctor medication. 1. Primary diseases are not under control: you should go to the hospital, conduct relevant examinations, and clearly diagnose the cause of recurrent high fever. The causes of recurrent high fever may include inflammation of the lungs, autoimmune diseases, drug allergies, viral or bacterial infections, and so on. The cause of recurrent high fever should be clarified before treatment. 2. Insufficient heat dissipation: while taking ibuprofen, you can choose appropriate physical methods to assist in the treatment, such as cold and wet compresses or warm water wiping, which can also bring down the body temperature.