Cervical spondylosis may lead to drowsiness, mainly in two cases: first, sympathetic type cervical spondylosis, this is due to the cervical spine part of the inflammatory foci, in the cervical spine is tired or cold, it is easy to appear local inflammation metabolites of the accumulation of increased, it will be possible to sympathetic nervous chain to produce stimulation. As a result, the sympathetic nerves become hyperactive or inhibited, and the symptoms of fatigue may appear. When the symptoms of fatigue, the human body will certainly appear drowsy performance. Secondly, due to the cervical spine part of the blood vessels are stimulated, the blood supply to the brain will decline, easy to lead to the brain cells show relative inhibition of the state, in this case is also prone to drowsiness, choose to rest in bed to sleep can be effective in alleviating the fatigue of the cervical vertebrae, as well as inflammatory products of the accumulation of the situation, and to maintain a healthy state.