Old nervous back of the head tight, may be related to excessive mental stress, may also be due to neurasthenia, cervical spondylosis and other causes. 1. Mental stress: If the recent psychological pressure is too large, resulting in excessive mental tension, anxiety, coupled with insufficient sleep, the brain can not get enough rest, it may show the old nervousness, the back of the head tight, can also be accompanied by a sense of drowsiness in the head, mental lethargy and other manifestations. 2. Neurasthenia: the disease is usually due to long-term mental mood, psychological pressure is too large, resulting in long-term sleep disorders, which may make the patient is always nervous, the back of the head tight, can also be accompanied by too much thinking, memory loss and other symptoms. 3. Cervical spondylosis: due to the disease patients cervical spine normal physiological curvature changes, if the patient still long time to maintain the incorrect posture, resulting in neck muscle stiffness and tension, the head of the blood vessels and nerves to produce tension stimulation, may cause the back of the head tautness, but also can be accompanied by dizziness, headache, neck and shoulder pain and other symptoms. Old tension tightness in the back of the head, may also be related to other factors, it is recommended to seek medical attention as soon as possible, after a clear diagnosis, by the doctor’s guidance for treatment.