If you have a high fever of 39 degrees Celsius that doesn't subside, you can take several steps. First, take antipyretic medications such as paracetamol or ibuprofen as directed. Drink plenty of fluids like water and clear broths to prevent dehydration. Use cool compresses on your forehead, neck, and armpits to help lower body temperature. Loosen clothing and stay in a cool environment. If the fever persists for a long time or is accompanied by severe symptoms such as difficulty breathing, confusion, or persistent pain, seek medical attention promptly. ????