If you have red patches on your body, fever, weakness, and nausea, it is important to take care of yourself. Rest, drink plenty of fluids, and consider taking acetaminophen (like Tylenol) for the fever and Gravol for the nausea. If the symptoms persist or worsen, especially if the patches on your skin spread or if your condition does not improve after a week, it is best to consult a doctor. Make sure to listen to your body and seek medical attention if needed.