Dizziness and slight fever in the head may be caused by sympathetic nerve excitation, vegetative nerve dysfunction, upper respiratory tract infection and other reasons. In terms of treatment, the main thing is to regulate emotions and use medication for the original disease. 1. Sympathetic excitation: usually due to some stressful events, resulting in over-excitement, nervousness or shock, resulting in increased sympathetic excitability, which may be manifested in drowsiness and slight fever. By regulating emotions and relaxing, it is conducive to alleviating the symptoms. 2. Phytoneurological dysfunction: this disease is a functional disease, usually due to long-term psychological trauma and other factors, resulting in increased excitability of some areas of the cerebral cortex, resulting in dysregulation of the autonomic nervous system, which may be manifested in drowsiness and slight fever. B vitamins, methylcobalamin and other drugs that regulate nerve function can be applied to treat it. 3. Upper respiratory tract infections: usually caused by viral infections, when the body is attacked by viruses, it is easy to cause fever, which may show dizziness, slight fever, accompanied by coughing, runny nose and other symptoms. It can be treated with medicines such as wind-cold and cold granules. If the symptoms of dizziness and slight fever persist and cannot be relieved, you should consult a doctor as soon as possible to confirm the cause of the disease and then give targeted treatment.