Asymmetry of the clavicle may be caused by congenital dysplasia, bad habits or clavicle fracture. 1. Congenital dysplasia: Asymmetry of the clavicle may be caused by the birth of dysplasia. If the bone development at the clavicle is not symmetrical, usually the patient’s clavicle will grow asymmetrically. 2. Bad habits: Asymmetry of the clavicle may also be caused by bad habits in daily life. If you often tilt your head to one side or sleep in an inappropriate posture for a long time, it is easy to cause the sternocleidomastoid muscle to pull, thus causing the phenomenon of asymmetric clavicle. 3. Clavicle fracture: if the patient has a clavicle fracture, the fracture is more serious may lead to clavicle deformity, which may lead to clavicle asymmetry after healing. If the patient’s clavicle in addition to asymmetry is accompanied by other physical discomfort, it is recommended to go to the hospital in time for a detailed examination to identify the cause of the disease under the guidance of the doctor for treatment.