The forehead thermometer shows fever on both sides of the forehead but not in the middle.

Fever refers to an elevated body temperature. When using a thermometer gun to measure body temperature, if the sides of the forehead show higher readings while the center remains normal, this may be due to inaccurate measurement positioning, insufficient measuring time, uneven temperature distribution, or other factors.

1. Inaccurate measurement position

When using a thermometer gun, ensure the sensor is aimed at the center of the forehead and held perpendicular to it. If the measurement position is off-center, it may lead to inaccurate results. It is recommended to re-measure the temperature, carefully adjusting the device's position.

2. Insufficient measurement time

When measuring, maintain contact between the thermometer and the forehead for an adequate duration. If the measurement time is too short, the reading may be inaccurate. Ensure sufficient measuring time and consider other symptoms for a comprehensive assessment.

3. Uneven temperature distribution

Body temperature may not be evenly distributed across the forehead, sometimes causing the sides to register higher temperatures than the center, leading to inaccurate readings. It is recommended to maintain an appropriate distance from the skin—avoid holding the thermometer too far away.

In addition, unstable body temperature regulation could also contribute to such discrepancies. If this situation persists, it is advisable to seek medical consultation for further evaluation.