Can Applying Plaster Cause a Fever?

Fever usually refers to an elevated body temperature. Applying a plaster may cause localized skin heating, but if symptoms such as burning sensation, rash, or itching occur, patients are advised to immediately remove the plaster and seek medical attention promptly. Applying a plaster is a form of external treatment in traditional Chinese medicine, where the plaster is adhered to the skin over the affected area. The medication then permeates through the skin, reaching the internal meridians and viscera, thereby exerting effects such as dispelling wind and cold, promoting blood circulation and removing blood stasis, and alleviating swelling and pain.

The localized skin heating that may occur after applying a plaster is due to the presence of traditional Chinese medicinal ingredients in the plaster that promote blood circulation and remove blood stasis, such as safflower, radix aconiti kusnezoffii, and millettia reticulata. These ingredients enhance blood circulation, leading to localized skin heating, which is generally perceived by patients as warmth and is considered normal. However, if the skin experiences a burning sensation accompanied by redness, rash, or itching, it may indicate an allergic reaction. In such cases, patients are advised to seek medical attention promptly and follow the doctor's instructions for treatment options such as calamine lotion, loratadine tablets, or cetirizine hydrochloride tablets.

It is recommended that patients apply plasters under the guidance of a traditional Chinese medicine practitioner after a syndrome differentiation, and avoid self-administration blindly to prevent adverse reactions. Special attention should be paid to not keeping the plaster on for too long, as this may cause harm to the skin.