Itchy skin during the recovery period of fracture may be caused by the following conditions: 1. It may be caused by the long time of splint fixation or cast fixation of fracture, resulting in local skin itching due to impermeability, which leads to long-term stimulation of local skin by sweat stains. The performance of the most common for the external application of bruising Chinese medicine or decongestant drops, resulting in local skin allergy, in addition to itching symptoms, there will be maculo-like redness or wind-blown urticaria, this situation must stop taking drugs, the use of dexamethasone ointment or Benadryl ointment topical, can also be combined with oral anti-allergy drugs to promote the subsidence of allergy symptoms.