At what body temperature in degrees Celsius can fever patches be used?

Generally, a fever patch can be used when body temperature ranges from 37.3°C to 38.5°C.

When body temperature is between 37.3°C and 38.5°C, individuals may experience mild symptoms such as headache, dizziness, or physical fatigue. Fever patches primarily function through physical cooling. They contain hydrophilic polymer gel components. When applied to areas such as the forehead or temples, the water in the gel evaporates and absorbs heat, removing heat from the skin surface. This process can help enhance body heat dissipation to a certain extent, assist in regulating body temperature, prevent rapid further temperature increases, and help prevent the condition from progressing to moderate or high fever.

After applying a fever patch, monitor whether the body temperature begins to decrease or whether symptoms related to fever improve. If the temperature continues to rise or symptoms worsen despite using the fever patch, it may indicate that the fever could be caused by a viral infection or that the condition is severe, requiring further medical treatment.

Individuals with a fever should also rest more to reduce physical exertion and drink plenty of water to aid heat dissipation and replace fluid loss. Monitor body temperature closely. If the temperature exceeds 38.5°C and remains elevated, or if severe symptoms such as headache or difficulty breathing occur, seek medical attention promptly.