Abrasion marks or swelling in the neck: Abrasion marks or swelling in the neck is one of the symptoms of carotid artery traumatic embolism. The common carotid artery is the main arterial trunk of the head and neck and branches into the internal and external carotid arteries at the superior border of the thyroid cartilage. The incidence of traumatic embolism is higher in the internal carotid artery. Because the internal carotid artery supplies blood mainly to the brain and optic apparatus, the consequences of embolism are more serious. Embolism of the internal carotid artery can occur in its cervical segment, rocky segment, cavernous sinus segment, or supratentorial segment. According to the analysis of 70 cases, 85% of embolism occurred in the cervical segment and 10% in the petrous segment. Internal carotid artery embolism mostly occurs after contusion of the neck, and patients may have transient cerebral ischemic attacks followed by neurological signs, which are characteristic of internal carotid artery embolism. The development of thrombosis can be controlled by relieving vasospasm and anticoagulation therapy. Internal carotid artery thrombectomy is performed if necessary. Abrasions are injuries in which the skin surface is abraded by rough objects, most commonly on the palms of the hands, elbows, knees, and lower legs. The abrasion is seen as a broken epidermis with a pale wound and many small bleeding spots and tissue fluid exudation. Because the dermis is rich in nerve endings, the injury is often very painful, but the regenerative capacity of epidermal cells is very strong, if the wound is not infected, it heals quickly and can leave no scars. Abrasions are superficial abrasions of the skin. Because the dermis is rich in nerve endings, the injury is often very painful, but the regenerative ability of epidermal cells is very strong, if the wound is not infected, it heals quickly and can not leave a scar. Skin abrasions are external forces, which can easily induce fractures, so what diagnosis is needed for skin abrasion fractures from external forces? The following is the diagnosis of skin abrasion of fracture is introduced: 1. Medical history: there is a clear history of trauma. 2. Signs: (1) deformity: displacement of the fracture segment can change the shape of the affected limb, mainly manifested as shortening, angulation or rotation. (2) Abnormal activity: the part of the limb that cannot be moved under normal circumstances appears abnormal after fracture. (3) Bone rubbing sound or bone rubbing sensation: after fracture, when the two fracture ends rub against each other, bone reject sound or bone rubbing sensation can be produced. 3.X-ray examination: fracture line is visible. The disease can be clearly diagnosed based on its clinical manifestations and X-ray examination without differentiation, but clinical attention needs to be paid to whether the fracture is a simple fracture or a pathological fracture caused by the patient’s own original disease. In the case where the patient has an abnormal bone due to the original disease, a slight force can cause a fracture, which occurs more frequently than in this case and needs to be strictly observed and diagnosed.