Neck pain
Neck pain, also known as cervicalgia, is a common problem, with two-thirds of the population having neck pain at some point in their lives. Neck pain, although felt in the neck, can be caused by numerous other spinal problems. Neck pain may arise due to muscular tightness in both the neck and upper back, or pinching of the nerves emanating from the cervical vertebrae. Joint disruption in the neck creates pain, as does joint disruption in the upper back. The head is supported by the lower neck and upper back, and it is these areas that commonly  cause neck pain. The top three joints in the neck allow for most movement of the neck and head. The lower joints in the neck and those of the upper back create a supportive structure for the head to sit on. If this support system is affected adversely, then the muscles in the area will tighten, leading to neck pain. Neck pain affects about 5% of the global population as of 2010. Differential diagnosis. Neck pain may come from any of the structures in the neck including: vascular, nerve, airway, digestive, and musculature / skeletal, or be referred from other areas  of the body. Major and severe causes of neck pain (roughly in order of severity) include: More common and lesser neck pain causes include: Although the causes are numerous, most are easily rectified by either professional help or using self help advice and techniques. More causes can include: poor sleeping posture, torticollis, head injury, rheumatoid arthritis, Carotidynia, congenital cervical rib, mononucleosis, rubella, certain cancers, ankylosing spondylitis, cervical spine fracture, esophageal trauma, subarachnoid hemorrhage, lymphadenitis, thyroid trauma, and tracheal trauma. Treatment. Treatment of neck pain depends on the cause. For the vast majority of people, neck pain can be treated conservatively . Recommendations in which it helps alleviate symptoms include facing forward and rocking the head back and forth the when kneeling look down and rock the head down and back up preferably with your partners hand giving moderate resistance on the raising motion this should be practised 5 times a day minimum. Other common treatments could include medication, body mechanics training, ergonomic reform, and physical therapy. Treatments may also include patient education, but existing evidence shows a lack of effectiveness. Medication. Analgesics such as acetaminophen or NSAIDs are generally recommended for pain. A 2017 review, however found that paracetamol was not  efficacious and that NSAIDs are minimally effective. Muscle relaxants may also be recommended. However, one study showed that one muscle relaxant called cyclobenzaprine was not effective for treatment of acute cervical strain (as opposed to neck pain from other etiologies or chronic neck pain). Surgery. Surgery is usually not indicated for mechanical causes of neck pain. If neck pain is the result of instability, cancer, or other disease process surgery may be necessary. Surgery is usually not indicated for "pinched nerves" or herniated discs unless there is spinal cord compression or pain and disability have been protracted for many months  and refractory to conservative treatment such as physical therapy. Alternative medicine. Exercise plus joint manipulation has been found to be beneficial in both acute and chronic mechanical neck disorders. In particular, specific strengthening exercise may improve function and pain. Motor control using cranio-cervical flexion exercises has been shown to be effective for non-specific chronic neck pain. Both cervical manipulation and cervical mobilization produce similar immediate-, and short-term changes. Multiple cervical manipulation sessions may provide better pain relief and functional improvement than certain medications at immediate to long-term follow-up. Thoracic manipulation may also improve pain and  function. Low level laser therapy has been shown to reduce pain immediately after treatment in acute neck pain and up to 22 weeks after completion of treatment in patients that experience chronic neck pain. Low quality evidence suggests that cognitive-behavioural therapy may be effective at reducing pain in the short-term. Massaging the area may provide immediate and short-lived benefits, but long term effects are unknown. There is a lack of high-quality evidence to support the use of mechanical traction, and side effects include headaches, nausea and injury to tissue. Radiofrequency denervation may provide temporary relief for  specific affected areas in the neck. Transcutaneous electrical nerve stimulation (TENS), the noninvasive use of electrical stimulation on the skin, is of unclear benefit in chronic neck pain. Epidemiology. Neck pain affects about 330 million people globally as of 2010 (4.9% of the population). It is more common in women (5.7%) than men (3.9%). It is less common than low back pain. Prognosis. About one-half of episodes resolve within one year and around 10% become chronic. Prevention. Prevalence of neck pain in the population suggests it is a common condition. For cervicalgia associated with bad posture the treatment is  usually corrective in nature (i.e. ensure shoulders are in one line above the hips) and relating to interventions that provide ergonomic improvement. There is also growing research in how neck pain caused by mobile devices (see iHunch) can be prevented using embedded warning systems.