Forehead Temperature Readings During COVID-19 - Family Medicine

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Understanding forehead temperature readings during the COVID-19 pandemic has become increasingly important, especially as many workplaces and public spaces implement temperature checks as a precautionary measure. Your experience of frequently recording forehead temperatures between 37°C and 37.9°C while having a lower reading on a traditional thermometer (34°C) raises some important points regarding the accuracy and interpretation of temperature readings.

Forehead thermometers, or temporal artery thermometers, measure the infrared heat emitted from the forehead. While they are convenient and non-invasive, they can be less accurate than oral, rectal, or ear thermometers. Factors such as ambient temperature, sweat on the forehead, and the distance from the skin can affect the readings. It is not uncommon for forehead readings to be slightly elevated, especially if the person has recently been active or is in a warm environment.

In general, a normal body temperature ranges from about 36.1°C to 37.2°C (97°F to 99°F). A reading above 37.5°C (99.5°F) is typically considered a fever, which may indicate an underlying infection or illness. However, it is essential to consider the context of the readings. If you are consistently measuring temperatures in the range of 37°C to 37.9°C without any accompanying symptoms such as cough, sore throat, fatigue, or body aches, it may not be a cause for concern.
The discrepancy between your forehead readings and the lower reading from a traditional thermometer (34°C) is particularly noteworthy. A reading of 34°C is unusually low and may suggest an error in measurement, as normal body temperature should not fall below 35°C (95°F). It is advisable to double-check the calibration of your thermometer and ensure that you are using it correctly, as improper use can lead to inaccurate readings.

Given the current pandemic situation, many workplaces are understandably cautious and may require individuals with elevated temperatures to seek medical evaluation. If your forehead thermometer consistently beeps and indicates a temperature above the normal range, it may be prudent to follow up with your healthcare provider. They can perform a more accurate assessment using a different method and evaluate whether further investigation is necessary.

In summary, while your forehead temperature readings may be slightly elevated, the absence of symptoms suggests that you may not be ill. However, the discrepancy with the traditional thermometer reading warrants further investigation. It is always best to err on the side of caution during these times, so consulting with your healthcare provider for personalized advice based on your specific situation is recommended. Additionally, maintaining good hydration, practicing proper hygiene, and monitoring any changes in your health can help you stay well during this challenging period.