Tendon pain on both sides of the neck can be caused by neck trauma, cervical fasciitis, cervical spondylosis, frozen shoulder and other diseases. 1. Neck trauma: strenuous neck activities can lead to strains, causing soft tissue injuries such as neck muscles and ligaments, which can lead to neck pain on both sides of the tendons. 2. Cervical fasciitis: prolonged low head work or cold can lead to aseptic inflammation of the cervical fascia, stimulated by inflammatory substances can appear on both sides of the neck tendon pain performance. 3. Cervical spondylosis: when cervical spondylosis is a herniated cervical intervertebral disc, it can lead to irritation of spinal nerves or nerve roots, resulting in the symptoms of neck pain on both sides of the tendons, accompanied by numbness of the upper limbs, pain and other manifestations. 4. Frozen shoulder: Frozen shoulder is mainly characterized by pain in the shoulder joint and limitation of activities, and when the symptoms are severe, it can involve the neck, resulting in radiating pain in the neck. When the tendon pain on both sides of the neck, you should consult a doctor in a timely manner, and the specialist will clarify the condition and then actively carry out appropriate treatment, which will help to alleviate the pain and discomfort and other symptoms as soon as possible.