Can a fever-reducing patch be applied under the armpit?

Sep 20, 2024 Source: Cainiu Health

Dr. Yang Ziqi

Introduction

In general, fever-reducing patches can be applied under the armpit. These patches work by contacting the skin, allowing water in the polymer gel to evaporate and carry away heat, thereby reducing body temperature—a form of physical cooling. Applying the patch under the armpit helps promote local vasodilation, enhancing heat dissipation and cooling. However, if a patient is allergic to the components of the fever-reducing patch, this method should not be used for cooling.

Generally, fever-reducing patches can be applied under the armpits. However, if a patient is allergic to the ingredients in the patch, this method of cooling should not be used.

Fever-reducing patches mainly contain polymer gels, purified water, glycerin, and other components. By contacting the skin, the water within the polymer gel evaporates, carrying away heat and thereby reducing body temperature. This is a form of physical cooling. The armpit area contains many blood vessels with rapid blood flow; applying the patch here helps promote local vasodilation and enhances heat dissipation. Additionally, fever-reducing patches can also be applied to other areas rich in blood vessels, such as the forehead, neck, and groin, to achieve the desired cooling effect.

However, if a patient is allergic to any component of the fever-reducing patch, it should not be used for cooling. During application, if symptoms such as pain, redness, swelling, or itching occur under the armpit, use should be stopped immediately to avoid worsening skin damage and discomfort.

Fever-reducing patches are only an auxiliary measure for lowering body temperature. If high fever persists despite using the patch, prompt medical attention is recommended. Under a doctor's guidance, medications such as ibuprofen sustained-release capsules, acetaminophen tablets, or nimesulide tablets may be used for fever reduction.

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