Measure your temperature with a thermometer
A fever is usually 100.4°F (38°C) or higher
Check for chills or sweating
Check for feeling unusually warm
Check for headache
Check for body aches
Check for fatigue or weakness
Check for flushed skin
Check for loss of appetite
Check for dehydration or dry mouth
Seek medical advice if the fever is high, lasts more than a few days, or comes with severe symptoms