What Are the Hazards of “Warm Patches”?

Many people use disposable heat patches during winter. However, improper use of these patches may pose certain health risks. So, what are the potential hazards associated with heat patches?

Potential Hazards of Heat Patches

Prolonged use—especially exceeding six hours—may cause localized, persistent erythematous (red) patches on the skin that are slow to fade and may affect appearance. Pregnant women should avoid using heat patches altogether, as excessive or inappropriate use may lead to fetal developmental abnormalities, congenital malformations, or even miscarriage. Prolonged exposure to elevated temperatures may also cause thinning of the local skin tissue. While heat patches are indeed popular among women in winter, individuals with sensitive skin are advised against long-term use.

When using heat patches, never apply them directly onto bare skin. Instead, place the patch on a layer of clothing or on a small towel first, then position it over the desired area. For example: - For cervical discomfort, apply the patch over the painful area of the neck. - For colds or coughing, apply it below the cervical spine (over the Feishu acupoint). - For gastric discomfort, apply it just below the xiphoid process or over the umbilicus.

For lower back pain, apply the patch directly over the affected area of the lumbar region. If experiencing generalized coldness or foot pain, apply a smaller heat patch to the soles of the feet or over the Zusanli (ST36) acupoint. Additionally, regular physical exercise is recommended to strengthen overall constitution. We hope this information proves helpful!