"Physiologists divide nerve-fibers, which form the nerves, into two classes, afferent and efferent. Impressions are made on the peripheral afferent fiber-endings; these create sensations that are transmitted to the center of the nervous system. Efferent nerve-fibers carry impulses out from the center to their endings. Most of these go to muscles and are therefore called motor impulses; some are secretory and enter glands; a portion are inhibitory, their function being to restrain secretion. Thus, nerves carry impulses outward and sensations inward. The activity of these nerves, or rather their fibers, may become excited or allayed by impingement, the result being a modification of functionality – too much or not enough action – which is disease."[42]
Jump up ^ Weeks, William B; Goertz, Christine M; Meeker, William C; Marchiori, Dennis M (2015-01-01). "Public Perceptions of Doctors of Chiropractic: Results of a National Survey and Examination of Variation According to Respondents' Likelihood to Use Chiropractic, Experience With Chiropractic, and Chiropractic Supply in Local Health Care Markets". Journal of Manipulative and Physiological Therapeutics. 38 (8): 533–44. doi:10.1016/j.jmpt.2015.08.001. PMID 26362263.

In most circumstances, a medical history and physical examination are the key parts of an evaluation required to diagnose neck pain/disorders. In some cases, individuals who do not respond to starting therapy may undergo specialized radiographic tests, such as plain X-rays, magnetic resonance imaging (MRI), or computerized tomography to screen for additional problems of soft tissues, herniated discs, spinal stenosis, tumors, or nerve injuries.
Jump up ^ Weeks, William B; Goertz, Christine M; Meeker, William C; Marchiori, Dennis M (2015-01-01). "Public Perceptions of Doctors of Chiropractic: Results of a National Survey and Examination of Variation According to Respondents' Likelihood to Use Chiropractic, Experience With Chiropractic, and Chiropractic Supply in Local Health Care Markets". Journal of Manipulative and Physiological Therapeutics. 38 (8): 533–44. doi:10.1016/j.jmpt.2015.08.001. PMID 26362263.
The most worrisome causes of neck pain rarely cause severe pain, and common problems like slipped discs are usually much less serious than people fear. Sharp and stabbing pains are usually false alarms. Only about 1% of neck pain is ominous, and even then it’s often still treatable. Most of the 1% are due to cancer, autoimmune disease, or spinal cord damage.

Figure 1. (side view) The neck region is called the cervical spine. Protected within the bones of the cervical spine are the spinal cord and nerves. The seven cervical bones (vertebrae) are numbered C1 to C7. Each bone is separated and cushioned by shock-absorbing discs. The spinal nerves pass through bony canals to branch out to the neck and arms.

I’ve never really considered going to a chiropractor—I’m healthy, moderately active and I don’t really have much pain on a regular basis. But I work for a health and wellness company that encourages its employees to take an active role in their health, and many of my coworkers swear by their chiropractors. I wasn’t sure what a chiropractor could really do for me, but after a bit of word-of-mouth research, I found out that chiropractic care actually has benefits for your whole body! So I decided to give it a try.

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