4. Fever
Fever is one of the first general signs that your body is trying to fight off the signs of a disease, infection or chronic medical condition. It’s one of the first responses that the immune system triggers when it detects that there might be a problem – and what this means for you is that it’s the first possible sign that it’s time to see your doctor for treatment.
A fever is any higher-than-normal bodily temperature that lasts for more than a few hours at a time: Never try to see how far a fever can be pushed before medical attention is sought out – a fever can be dangerous and might place additional pressure on the body (especially the heart) and fever is one of the most dangerous general symptoms to have.
Where it’s sinusitis, the characteristic flu-like symptoms of sinusitis are likely to be present along with the fever. See your doctor to be sure.