Stiffness in the neck is a medical condition that is common.The structure of neck can be best explained as seven vertebrae that are the bony building blocks of the spine in the neck that surround the spinal cord and canal. Between these vertebrae are discs, and nearby pass the nerves of the neck. Within the neck, structures include the skin, neck muscles, arteries, veins, lymph glands, thyroid gland, parathyroid glands, esophagus, larynx, and trachea.
