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Deep Learning Technology: Sebastian Arnold, Betty van Aken, Paul Grundmann, Felix A. Gers and Alexander Löser. Learning Contextualized Document Representations for Healthcare Answer Retrieval. The Web Conference 2020 (WWW'20)
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Anticipating later botox therapy for migraine, early work by Jancsó "et al." found some success in treatment using denervation or pretreatment with capsaicin to prevent uncomfortable symptoms of neurogenic inflammation.
A recent (2010) study of the treatment of migraine with CGRP blockers shows promise. In early trials, the first oral nonpeptide CGRP antagonist, MK-0974 (Telcagepant), was shown effective in the treatment of migraine attacks, but elevated liver enzymes in two participants were found. Other therapies and other links in the neurogenic inflammatory pathway for interruption of disease are under study, including migraine therapies.
Noting that botulinum toxin has been shown to have an effect on inhibiting neurogenic inflammation, and evidence suggesting the role of neurogenic inflammation in the pathogenesis of psoriasis, the University of Minnesota has a pilot clinical trial underway to follow up on the observation that patients treated with botulinum toxin for dystonia had dramatic improvement in psoriasis.
Astelin (Azelastine) "is indicated for symptomatic treatment of vasomotor rhinitis including rhinorrhea, nasal congestion, and post nasal drip in adults and children 12 years of age and older."
Statins appear to "decrease expression of the proinflammatory neuropeptides calcitonin gene-related peptide and substance P in sensory neurons," and so might be of use in treating diseases presenting with predominant neurogenic inflammation.
There are no definitive diagnostic tests for CP/CPPS. This is a poorly understood disorder, even though it accounts for 90–95% of prostatitis diagnoses. It is found in men of any age, with the peak incidence in men aged 35–45 years. CP/CPPS may be inflammatory (Category Ⅲa) or non-inflammatory (Category Ⅲb), based on levels of pus cells in expressed prostatic secretions (EPS), but these subcategories are of limited use clinically. In the inflammatory form, urine, semen, and other fluids from the prostate contain pus cells (dead white blood cells or WBCs), whereas in the non-inflammatory form no pus cells are present. Recent studies have questioned the distinction between categories Ⅲa and Ⅲb, since both categories show evidence of inflammation if pus cells are ignored and other more subtle signs of inflammation, like cytokines, are measured.
In 2006, Chinese researchers found that men with categories Ⅲa and Ⅲb both had significantly and similarly raised levels of anti-inflammatory cytokine TGFβ1 and pro-inflammatory cytokine IFN-γ in their EPS when compared with controls; therefore measurement of these cytokines could be used to diagnose category Ⅲ prostatitis. A 2010 study found that nerve growth factor could also be used as a biomarker of the condition.
For CP/CPPS patients, analysis of urine and expressed prostatic secretions for leukocytes is debatable, especially due to the fact that the differentiation between patients with inflammatory and non-inflammatory subgroups of CP/CPPS is not useful. Serum PSA tests, routine imaging of the prostate, and tests for Chlamydia trachomatis and Ureaplasma provide no benefit for the patient.
Extraprostatic abdominal/pelvic tenderness is present in >50% of patients with chronic pelvic pain syndrome but only 7% of controls.
Healthy men have slightly more bacteria in their semen than men with CPPS. The high prevalence of WBCs and positive bacterial cultures in the asymptomatic control population raises questions about the clinical usefulness of the standard 4-glass test as a diagnostic tool in men with CP/CPPS. The use of the four-glass test by American urologists is now rare, with only 4% using it regularly.
Men with CP/CPPS are more likely than the general population to suffer from Chronic Fatigue Syndrome (CFS), and Irritable Bowel Syndrome (IBS).
Experimental tests that could be useful in the future include tests to measure semen and prostate fluid cytokine levels. Various studies have shown increases in markers for inflammation such as elevated levels of cytokines, myeloperoxidase, and chemokines.
Some conditions have similar symptoms to chronic prostatitis: Bladder neck hypertrophy and urethral stricture may both cause similar symptoms through urinary reflux ("inter alia"), and can be excluded through flexible cytoscopy and urodynamic tests.
Magnesium deficiency causes neurogenic inflammation in a rat model. Researchers have theorized that since substance P which appears at day five of induced magnesium deficiency, is known to stimulate in turn the production of other inflammatory cytokines including IL-1, Interleukin 6 (IL-6), and TNF-alpha (TNFα), which begin a sharp rise at day 12, substance P is a key in the path from magnesium deficiency to the subsequent cascade of neuro-inflammation. In a later study, researchers provided rats dietary levels of magnesium that were reduced but still within the range of dietary intake found in the human population, and observed an increase in substance P, TNF alpha (TNFα) and Interleukin-1 beta (IL-1β), followed by exacerbated bone loss. These and other data suggest that deficient dietary magnesium intake, even at levels not uncommon in humans, may trigger neurogenic inflammation and lead to an increased risk of osteoporosis.
Inflammation is usually indicated by adding the suffix "", as shown below. However, some conditions such as asthma and pneumonia do not follow this convention. More examples are available at list of types of inflammation.
Presently, established empirical evidence suggests against thermography's efficacy as a reliable tool for diagnosing CRPS. Although CRPS may, in some cases, lead to measurably altered blood flow throughout an affected region, many other factors can also contribute to an altered thermographic reading, including the patient's smoking habits, use of certain skin lotions, recent physical activity, and prior history of trauma to the region. Also, not all patients diagnosed with CRPS demonstrate such "vasomotor instability" — less often, still, those in the later stages of the disease. Thus, thermography alone cannot be used as conclusive evidence for - or against - a diagnosis of CRPS and must be interpreted in light of the patient's larger medical history and prior diagnostic studies.
In order to minimise the confounding influence of external factors, patients undergoing infrared thermographic testing must conform to special restrictions regarding the use of certain vasoconstrictors (namely, nicotine and caffeine), skin lotions, physical therapy, and other diagnostic procedures in the days prior to testing. Patients may also be required to discontinue certain pain medications and sympathetic blockers. After a patient arrives at a thermographic laboratory, he or she is allowed to reach thermal equilibrium in a 16–20 °C, draft-free, steady-state room wearing a loose fitting cotton hospital gown for approximately twenty minutes. A technician then takes infrared images of both the patient's affected and unaffected limbs, as well as reference images of other parts of the patient's body, including his or her face, upper back, and lower back. After capturing a set of baseline images, some labs further require the patient to undergo cold-water autonomic-functional-stress-testing to evaluate the function of his or her autonomic nervous system's peripheral vasoconstrictor reflex. This is performed by placing a patient's unaffected limb in a cold water bath (approximately 20 °C) for five minutes while collecting images. In a normal, intact, functioning autonomic nervous system, a patient's affected extremity will become colder. Conversely, warming of an affected extremity may indicate a disruption of the body's normal thermoregulatory vasoconstrictor function, which may sometimes indicate underlying CRPS.
Scintigraphy, plain radiographs, and magnetic resonance imaging (MRI) may all be useful diagnostically. Patchy osteoporosis (post-traumatic osteoporosis), which may be due to disuse of the affected extremity, can be detected through X-ray imagery as early as two weeks after the onset of CRPS. A bone scan of the affected limb may detect these changes even sooner and can almost confirm the disease. Bone densitometry can also be used to detect changes in bone mineral density. It can also be used to monitor the results of treatment since bone densitometry parameters improve with treatment.
Inflammation (from Latin "") is part of the complex biological response of body tissues to harmful stimuli, such as pathogens, damaged cells, or irritants, and is a protective response involving immune cells, blood vessels, and molecular mediators. The function of inflammation is to eliminate the initial cause of cell injury, clear out necrotic cells and tissues damaged from the original insult and the inflammatory process, and initiate tissue repair.
The classical signs of inflammation are heat, pain, redness, swelling, and loss of function. Inflammation is a generic response, and therefore it is considered as a mechanism of innate immunity, as compared to adaptive immunity, which is specific for each pathogen. Too little inflammation could lead to progressive tissue destruction by the harmful stimulus (e.g. bacteria) and compromise the survival of the organism. In contrast, chronic inflammation may lead to a host of diseases, such as hay fever, periodontitis, atherosclerosis, rheumatoid arthritis, and even cancer (e.g., gallbladder carcinoma). Inflammation is therefore normally closely regulated by the body.
Inflammation can be classified as either "acute" or "chronic". "Acute inflammation" is the initial response of the body to harmful stimuli and is achieved by the increased movement of plasma and leukocytes (especially granulocytes) from the blood into the injured tissues. A series of biochemical events propagates and matures the inflammatory response, involving the local vascular system, the immune system, and various cells within the injured tissue. Prolonged inflammation, known as "chronic inflammation", leads to a progressive shift in the type of cells present at the site of inflammation, such as mononuclear cells, and is characterized by simultaneous destruction and healing of the tissue from the inflammatory process.
Inflammation is not a synonym for infection. Infection describes the interaction between the action of microbial invasion and the reaction of the body's inflammatory response — the two components are considered together when discussing an infection, and the word is used to imply a microbial invasive cause for the observed inflammatory reaction. Inflammation on the other hand describes purely the body's immunovascular response, whatever the cause may be. But because of how often the two are correlated, words ending in the suffix "" (which refers to inflammation) are sometimes informally described as referring to infection. For example, the word "urethritis" strictly means only "urethral inflammation", but clinical health care providers usually discuss urethritis as a urethral infection because urethral microbial invasion is the most common cause of urethritis.
It is useful to differentiate inflammation and infection as there are many pathological situations where inflammation is not driven by microbial invasion – for example, atherosclerosis, type III hypersensitivity, trauma, ischaemia. There are also pathological situations where microbial invasion does not result in classic inflammatory response—for example, parasitosis, eosinophilia.
Traditional autonomic testing is used to aid in the diagnosis of AAG. These tests can include a Tilt Table Test (TTT), thermoregulatory sweat test (TST), quantitative sudomotor autonomic reflex testing (QSART) and various blood panels. Additionally, a blood test showing high levels of the antibody ganglionic nicotenic acetylcholine receptor (gAChr) occur in about 50% of patients with AAG (seropositive AAG). The seronegative patients (those without detectable gAChR levels) are theorized to have one or more different antibodies responsible for the autonomic dysfunction. However, both seropositive and seronegative patients have been seen to respond to the same treatments. A paraneoplastic panel may also be ordered to rule out paraneoplastic syndrome.
Trochleitis is diagnosed based on three criteria: 1) demonstration of inflammation of superior oblique tendon/ trochlea region, 2) periorbital pain and tenderness to palpation in the area of the sore trochlea, and 3) worsening of pain on attempted vertical eye movement, particularly with adduction of the eye. It is important to identify trochleitis because it is a treatable condition and the patient can benefit much from pain relief. Treatment consists of a single injection of corticosteroids to the affected peritrochlear region. A specific "cocktail" consisting of 0.5 ml of depomedrol (80 mg/ml) and 0.5 ml of 2% lidocaine can be injected into the trochlea; immediate relief due to the effects of the local anesthetic indicates successful placement. However, great care must be taken as the injection is in the region of several arteries, veins and nerves. The needle should not be too small (so as not to penetrate tiny structures), the surgeon should draw back on the syringe (to ensure not have pierced a vessel), the lidocaine should not contain epinephrine (which could cause vasospasm), and the pressure of the injection must always be controlled. Only a limited number of injections can be made as they would otherwise lead to muscle atrophy. Diagnosis can be confirmed by response to this treatment; pain and swelling are expected to disappear in 48–72 hours. Some patients experience recurrence of trochleitis.
Where an underlying neoplasm is the cause, treatment of this condition is indicated in order to reduce progression of symptoms. For cases without a known cause, treatment involves suppression of the immune system with corticosteroid treatment, intravenous immunoglobulin, immunosuppressive agents like Rituximab, Cellcept, or Imuran or plasmapheresis.
Costochondritis is a common condition and is responsible for 30% of emergency room chest pain related visits. One-fifth of visits to the primary care physician are for musculoskeletal chest pain; of this 20% of primary care office visits, 13% is due to costochondritis. Costochondritis cases are most often seen in people older than age 40 and occurs more often in women.
In chronic bacterial prostatitis there are bacteria in the prostate, but there may be no symptoms or milder symptoms than occur with acute prostatitis. The prostate infection is diagnosed by culturing urine as well as prostate fluid (expressed prostatic secretions or EPS) which are obtained by the doctor performing a rectal exam and putting pressure on the prostate. If no fluid is recovered after this prostatic massage, a post massage urine should also contain any prostatic bacteria.
Prostate specific antigen levels may be elevated, although there is no malignancy. Semen analysis is a useful diagnostic tool. Semen cultures are also performed. Antibiotic sensitivity testing is also done to select the appropriate antibiotic. Other useful markers of infection are seminal elastase and seminal cytokines.
The cause of trochleitis is often unknown (idiopathic trochleitis), but it has been known to occur in patients with rheumatological diseases such as systemic lupus erythematosus, rheumatoid arthritis, enteropathic arthropathy, and psoriasis. In his study, Tychsen and his group evaluated trochleitis patients with echography and CT scan to demonstrate swelling and inflammation. Imaging studies showed inflammation of superior oblique tendon/ trochlear pulley. It was unclear whether the inflammation involved the trochlea itself, or the tissues surrounding the trochlea.
Costochondritis may be treated with physical therapy (including ultrasonic, TENS, with or without nerve stimulation) or with medication. Treatment may involve the use of nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or other pain relief medications (analgesics) such as acetaminophen. Severe cases of costochondritis may call for the use of opioid medications such as hydrocodone or oxycodone, tricyclic antidepressant medications such as amitriptyline for pain from chronic costochondritis, or anti-epileptic drugs such as gabapentin may be used. Oral or injected corticosteroids may be used for cases of costochondritis unresponsive to treatment by NSAIDs; however, this treatment has not been the subject of study by rigorous randomized controlled trials and its practice is currently based on clinical experience. Rest from stressful physical activity is often advised during the recovery period.
Pulp sensibility tests are routinely used in the diagnosis of dental disease. There are 2 general types:
- Thermal-- most commonly, ethyl chloride sprayed onto a small ball of cotton wool, which produces intense cold. Alternatively gutta percha can be heated to produce heat.
- Electrical pulp test-- electric pulp testing (EPT) has been available for over a century and used by dentists worldwide. It is used to determine the health of the pulp and pulp-related pain. It does not provide information on vascular supply to the pulp. EPT produces electrical stimuli that cause an ionic change across the neural membrane, inducing an action potential in myelinated nerves. The threshold of pain level will be determined by increasing the voltage. The requirements of an EPT are appropriate application method, careful interpretation of the results, and an appropriate stimulus. The tests must be done with tooth isolation and conduction media. EPT is not recommended for patients with orthodontic bands or crowned teeth. Key factors in testing are the enamel and dentine thickness and the number of nerve fibers underlying the pulp. Pulp nerve fibers respond to lower current intensities and a small number of pulpal afferents, creating neural responses when electrical stimulation is applied. EPTs may be unreliable and lead to false-positive and false-negative results. False-positive responses in teeth may be attributed to pulpal necrosis. Also, since pulpal and periodontal nerve thresholds may overlap, the periodontal nerves may give a false indication in tooth sensibility.
Possible explanations for false-positives include:
- Response caused by conduction of the current because of periodontal or gingival issues
- Breakdown products associated with pulp necrosis may be able to conduct electric current next to infected and hypersensitive pulp tissue
- Inflamed pulp tissue may still be present
- Metallic restorations or orthodontic gear are still present
Studies have indicated that there is little correlation between histopathological status of the pulp and clinical information. A negative EPT response showed localized necrosis in 25.7% of cases and 72% of cases. Thus, 97.7% of cases with a negative response to EPT indicated that a root canal treatment should be carried out.
Electroanalgesia poses serious health problems in those patients who need other electrical equipment in their bodies, such as pacemakers and hearing aids, because the electrical signals of the multiple devices can interfere with each other and fail. People with heart problems, such as irregular heartbeat, are also at risk because the devices can throw off the normal electrical signal of the heart.
Antibiotic therapy has to overcome the blood/prostate barrier that prevents many antibiotics from reaching levels that are higher than minimum inhibitory concentration. A blood-prostate barrier restricts cell and molecular movement across the rat ventral prostate epithelium. Treatment requires prolonged courses (4–8 weeks) of antibiotics that penetrate the prostate well. The fluoroquinolones, tetracyclines and macrolides have the best penetration. There have been contradictory findings regarding the penetrability of nitrofurantoin , quinolones (ciprofloxacin, levofloxacin), sulfas (Bactrim, Septra), doxycycline and macrolides (erythromycin, clarithromycin). This is particularly true for gram-positive infections.
In a review of multiple studies, Levofloxacin (Levaquin) was found to reach prostatic fluid concentrations 5.5 times higher than Ciprofloxacin, indicating a greater ability to penetrate the prostate.
Persistent infections may be helped in 80% of patients by the use of alpha blockers (tamsulosin (Flomax), alfuzosin), or long term low dose antibiotic therapy. Recurrent infections may be caused by inefficient urination (benign prostatic hypertrophy, neurogenic bladder), prostatic stones or a structural abnormality that acts as a reservoir for infection.
In theory, the ability of some strains of bacteria to form biofilms might be one factor amongst others to facilitate development of chronic bacterial prostatitis.
Escherichia coli extract and cranberry have a potentially preventive effect on the development of chronic bacterial prostatitis, while combining antibiotics with saw palmetto, lactobacillus sporogens and arbutin may lead to better treatment outcomes.
Bacteriophages hold promise as another potential treatment for chronic bacterial prostatatis.
The addition of prostate massage to courses of antibiotics was previously proposed as being beneficial and prostate massage may mechanically break up the biofilm and enhance the drainage of the prostate gland. However, in more recent trials, this was not shown to improve outcome compared to antibiotics alone.
A diagnostic test for statin-associated auto-immune necrotizing myopathy will be available soon in order to differentiate between different types of myopathies during diagnosis. The presence of abnormal spontaneous electrical activity in the resting muscles indicates an irritable myopathy and is postulated to reflect the presence of an active necrotising myopathic process or unstable muscle membrane potential. However, this finding has poor sensitivity and specificity for predicting the presence of an inflammatory myopathy on biopsy. Further research into this spontaneous electrical activity will allow for a more accurate differential diagnosis between the different myopathies.
Currently a muscle biopsy remains a critical test, unless the diagnosis can be secured by genetic testing. Genetic testing is a less invasive test and if it can be improved upon that would be ideal. Molecular genetic testing is now available for many of the more common metabolic myopathies and muscular dystrophies. These tests are costly and are thus best used to confirm rather than screen for a diagnosis of a specific myopathy. Due to the cost of these tests, they are best used to confirm rather than screen for a diagnosis of a specific myopathy. It is the hope of researchers that as these testing methods improve in function, both costs and access will become more manageable
The increased study of muscle pathophysiology is of importance to researchers as it helps to better differentiate inflammatory versus non-inflammatory and to aim treatment as part of the differential diagnosis. Certainly classification schemes that better define the wide range of myopathies will help clinicians to gain a better understanding of how to think about these patients. Continued research efforts to help appreciate the pathophysiology will improve clinicians ability to administer the most appropriate therapy based on the particular variety of myopathy.
The mechanism for myopathy in individuals with low vitamin D is not completely understood. A decreased availability of 250HD leads to mishandling of cellular calcium transport to the sarcoplasmic reticulum and mitochondria, and is associated with reduced actomyosin content of myofibrils.
A patient's history is one of the key factors in diagnosing acquired noninflammatory myopathy. The history is used not only to analyze the time frame with which the patient began to express symptoms, but to also see if the disease is within the patient's family's history, to check medication or drug use history, and to see if the patient has suffered any trauma due to illness or infection. Basic exams will test for where the muscle weakness is and how weak it is. This is performed by testing for proximal and distal muscle strength, as well as testing for any signs of neurogenic symptoms such as impaired sensation, deep tendon reflexes, and atrophy.
If needed, more advanced equipment can be used to help determine whether a patient is suffering from ANIM. This includes:
- Measurement of serum levels of muscle enzymes
- Electromyography (EMG)
- Magnetic Resonance Imaging (MRI)
- Muscle biopsy
When examining the serum levels of muscle enzymes, the relative levels of creatine kinase, aldolase, aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase are closely examined. Abnormal levels of these proteins are indicative of both inflammatory myopathy and ANIM.
EMGs are particularly useful in locating the affected muscle groups, as well as determining the distribution of the myopathy throughout the cell. EMGs measure several indicators of myopathies such as:
- The spontaneous electrical movement from a single muscle fiber at rest,
- Measurement of a polyphasic, shorter amplitude, motor unit action potential during muscle stimulation,
- Determining that the muscle group cannot differentiate large motor plate stimulation from small motor plate stimulation involved in recruitment of muscle fibers.
Magnetic Resonance Imaging will elicit edema in inflammatory patients, but it will most likely show nothing in patients with ANIM and if it does, it will show some atrophy.
If an individual's ANIM is a result of a metabolite defect, then additional tests are required. These tests are directed at enzyme function at rest and during exercise, and enzyme intermediates. Molecular genetic testing is often used to determine if there was any predisposition to the expressed symptoms.
Neuroinflammation is inflammation of the nervous tissue. It may be initiated in response to a variety of cues, including infection, traumatic brain injury, toxic metabolites, or autoimmunity. In the central nervous system (CNS), including the brain and spinal cord, microglia are the resident innate immune cells that are activated in response to these cues. The CNS is typically an immunologically privileged site because peripheral immune cells are generally blocked by the blood–brain barrier (BBB), a specialized structure composed of astrocytes and endothelial cells. However, circulating peripheral immune cells may surpass a compromised BBB and encounter neurons and glial cells expressing major histocompatibility complex molecules, perpetuating the immune response. Although the response is initiated to protect the central nervous system from the infectious agent, the effect may be toxic and widespread inflammation as well as further migration of leukocytes through the blood–brain barrier.
Treatment of aortitis depends on the underlying cause. Infectious causes commonly require antibiotic treatment, while those associated with autoimmune vasculitides are generally treated with steroids.
Management includes the following treatment priorities: stop the inflammation, treat complications, prevent and monitor for re-occurrence.
Intermittent claudication is a symptom and is by definition diagnosed by a patient reporting a history of leg pain with walking relieved by rest. However, as other conditions such as sciatica can mimic intermittent claudication, testing is often performed to confirm the diagnosis of peripheral artery disease.
Magnetic resonance angiography and duplex ultrasonography appear to be slightly more cost-effective in diagnosing peripheral artery disease among people with intermittent claudication than projectional angiography.
Adenitis is a general term for an inflammation of a gland. Often it is used to refer to lymphadenitis which is the inflammation of a lymph node.
Radiculopathy is a diagnosis commonly made by physicians in primary care specialities, chiropractic, orthopedics, physiatry, and neurology. The diagnosis may be suggested by symptoms of pain, numbness, and weakness in a pattern consistent with the distribution of a particular nerve root. Neck pain or back pain may also be present. Physical examination may reveal motor and sensory deficits in the distribution of a nerve root. In the case of cervical radiculopathy, Spurling's test may elicit or reproduce symptoms radiating down the arm. In the case of lumbosacral radiculopathy, a Straight leg raise maneuver may exacerbate radiculopathic symptoms. Deep tendon reflexes (also known as a Stretch reflex) may be diminished or absent in areas innervated by a particular nerve root.
For further workup, the American College of Radiology recommends that projectional radiography is the most appropriate initial study in all patients with chronic neck pain. Two additional diagnostic tests that may be of use are magnetic resonance imaging and electrodiagnostic testing. Magnetic resonance imaging (MRI) of the portion of the spine where radiculopathy is suspected may reveal evidence of degenerative change, arthritic disease, or another explanatory lesion responsible for the patient's symptoms. Electrodiagnostic testing, consisting of NCS (Nerve conduction study) and EMG (Electromyography), is also a powerful diagnostic tool that may show nerve root injury in suspected areas. On nerve conduction studies, the pattern of diminished Compound muscle action potential and normal sensory nerve action potential may be seen given that the lesion is proximal to the Posterior root ganglion. Needle EMG is the more sensitive portion of the test, and may reveal active denervation in the distribution of the involved nerve root, and neurogenic-appearing voluntary motor units in more chronic radiculopathies. Given the key role of electrodiagnostic testing in the diagnosis of acute and chronic radiculopathies, the American Association of Neuromuscular & Electrodiagnostic Medicine has issued evidence-based practice guidelines, for the diagnosis of both cervical and lumbosacral radiculopathies. The American Association of Neuromuscular & Electrodiagnostic Medicine has also participated in the Choosing Wisely Campaign and several of their recommendations relate to what tests are unnecessary for neck and back pain.