Stiff neck

Stiff neck refers to the tense neck muscles, swelling, stiffness, cramps (cramps) and other phenomena, the neck movement is not flexible. Common in fatigue and cervical spondylosis. Neck stiffness is a continuous excessive muscle contraction, which not only reduces the blood supply to the neck muscles, but also causes the accumulation of metabolites such as lactic acid, which causes muscle ischemic pain. Pain in the back of the head and pain in the head may be tension headaches caused by head or cervical spine lesions.

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