Stiff neck, also called crick in the neck, is a static injury resulting from a long term of hypertension of neck muscle and torsion of small articulation of cervical spine.It is often caused by excessive deviation or over-turn about of the head in sleep on a too high or too low or too hard pillow, or in sleep with unfavorable gesture. And invasion of pathogenic wind and cold on the neck is also a common factor. For example, cold attack in a severe winter or indulgence in coolness on midsummer may all lead to invasion of exogenous pathogenic wind and cold on the neck, which can cause stagnation of qi and blood and blockage of meridians in the muscle of neck. As a result,there will occur rigidity, pain and dysfunction of the neck. The disease mostly occurs in young adults and in spring and winter. A natural cure can be gained within several days in some mild cases. And in the severe cases, it can last up to several weeks.