After applying the plaster, the redness and itching caused by skin allergy should be torn off in time to remove the residual ingredients of the plaster on the skin, and then use cold compress or ice compress to alleviate the redness and itching. In the process of cold compress or ice compress, pay attention to the skin reaction. If it's just erythema and itching, it's enough to just apply calamine lotion. Generally, it takes 3 to 5 days to return to normal. If after cold compress or ice compress, the erythema and itching are followed by tingling, or some blisters appear, this may be a serious allergic reaction, and some glucocorticoid ointment should be added. For example, the combination of halometasone cream and fusidic acid cream, the two most commonly used ointments, can not only resist allergy, prevent wound infection, but also accelerate wound healing. Another is to avoid contact with similar plasters on the skin.
