冻疮是由于寒冷因素所引起的物理性皮肤病,也是冬季皮肤科门诊最常见疾病之一。临床上表现为手、足、耳轮及颧部等处发生红色或紫红色水肿性斑,严重者局部发生大疱、糜烂、淤斑或坏死形成溃疡。当患者遇热时,往往有搔痒、灼热或疼痛感。有的病人每到冬季复发。根据激光有改善局部血液及淋巴循环、促进炎症吸收、增强组织再生能力、调整植物神经机能及镇痛等作用。1981年元月初至 Frostbite is a physical dermatitis caused by cold and is also one of the most common diseases in winter dermatology clinics. Clinical manifestations of hand, foot, ear and mastoid zygomatic red and purple edema occurred at other places, severe local bullae, erosion, ecchymosis or necrosis of the formation of ulcers. Patients often have itching, burning or pain when they are hot. Some patients relapse every winter. According to the laser to improve local blood and lymphatic circulation, promote inflammation absorption, enhance tissue regeneration ability, adjust autonomic function and analgesic effect. 1981 January to early