Can adults eat ice cream when they have a fever?

Whether adults with a fever can eat ice cream usually depends on their specific symptoms. If there is significant sore throat or throat swelling during the fever, consuming a small amount of ice cream may be acceptable, as it can help constrict blood vessels and alleviate discomfort. However, if body temperature does not exceed 38.5°C and there are few accompanying symptoms, eating ice cream is generally not recommended, as it may cause blood vessel constriction and slow down the return to normal body temperature.