The reason why the broken foot plaster is getting more and more painful is mainly considered to be related to the allergy to plasters, in the acute stage of sprains, or the existence of skin damage and no braking and rest. 1. Allergy to plasters: After a broken foot is treated with topical plasters, if there is a skin allergy to the plasters, it is easy to produce pain aggravation, accompanied by itching and redness of the skin. 2. In the acute stage of sprains: a broken foot is a manifestation of ankle sprains, if in the acute stage of sprains, the local oozing is more obvious, and will produce joint pain and swelling symptoms, if the premature use of topical ointment treatment, it is easy to accelerate the local blood circulation, which leads to more obvious pain. 3. There is skin damage: after a broken foot, if accompanied by the phenomenon of local skin damage, easy to form wounds, if the blind use of topical ointment treatment, the local stimulation of the drug is likely to lead to the wound part of the pain aggravated symptoms. 4. No brake rest: After the acute stage of the broken foot (within 72 hours), pay attention to ice, brake rest. If you don’t brake and rest in time, you will have more and more pain even after applying the plaster. In addition to timely medical care to clarify whether there is a fracture, the specific treatment needs to be carried out under the guidance of a professional physician, do not blindly deal with their own, so as not to aggravate the symptoms affect the recovery. Later, after the symptoms are relieved, you need to target the ankle stability training to prevent the phenomenon of sprain again.