High temperature (fever) in adults - NHS Website
What is a high temperature? Normal body temperature is different for everyone and changes during the day. A high temperature is usually considered to be 38C or above. This is sometimes called a fever. Check if you have a high temperature You may have a high temperature if: your chest or back feel hotter than usual you have other symptoms, such as shivering (chills), sweating or warm, red skin (this may be harder to see on black or brown skin) a thermometer says your temperature is 38C or above Important If you feel hot or shivery, you may have a high temperature even if a thermometer says your temperature is below 38C. ...