Pain behind the neck may be related to cervical spondylosis, muscle strain, carbuncle and so on. 1. Cervical spondylosis: When patients have cervical spondylosis, spinal cord cervical spondylosis and other cervical spondylosis, it can lead to the symptoms of pain behind the neck, which may also be accompanied by sensory abnormalities. 2. Muscle strain: Keeping the head down for a long time, crouching at the table and other postures may lead to muscle strain around the cervical vertebrae, resulting in symptoms such as stiffness and pain in the neck. 3. Carbuncle: when the skin at the back of the neck is infected by bacteria such as Staphylococcus aureus, it can lead to pain at the back of the neck, which may also be accompanied by redness, swelling and high skin at the infected area, and in severe cases, abscesses may appear. Neck pain can be caused by a variety of reasons, it is recommended to go to the hospital in a timely manner, improve the relevant examination, clear diagnosis and then carry out appropriate treatment.