Fever and dizziness may be caused by heat stroke, upper respiratory tract infection, meningitis and other factors. 1. Heatstroke: prolonged exposure to high temperature and high humidity may cause heatstroke, leading to dysfunction of the thermoregulatory center and excessive loss of electrolytes, resulting in fever and dizziness. 2. Upper respiratory tract infections: mostly caused by viral infections, patients may experience fever. If the patient has repeated fever, it may cause the central neuromodulation dysfunction, which may lead to the symptoms of dizziness. 3. Meningitis: mainly caused by various infections, if the lesions involve the meninges, cerebellum, brain stem and other parts of the brain, fever, dizziness and other symptoms may occur. If patients have symptoms of dizziness and fever, they should seek medical diagnosis and treatment in time to avoid delaying the condition.