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Query: UMLS:C0016053 (fibromyalgia)
 4,687 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Vulvar vestibulitis syndrome (VVS) is a common cause of dyspareunia in pre-menopausal women. Recent evidence points to the importance of the sensory component in VVS, particularly the heightened processing of tactile and pain sensation in the vulvar vestibule. The goal of the present study was to examine the neural basis of heightened sensitivity to touch (i.e. allodynia) in women with VVS. Using functional magnetic resonance imaging, we compared regions of neural activity in 14 women with VVS and 14 age- and contraceptive-matched control women in response to the application of mild and moderate pressure to the posterior portion of the vulvar vestibule. Intensity and unpleasantness ratings were recorded after each scan; these ratings were significantly higher for women with VVS than controls. All women with VVS described moderate pressure as painful and unpleasant, and 6 of the 14 women with VVS described mild pressure as painful and unpleasant. In contrast, none of the stimuli was painful for control women. Correspondingly, women with VVS showed more significant activations during pressure levels that they found to be either painful or non-painful than did controls during comparable pressure levels. During pressure described as painful by women with VVS, they had significantly higher activation levels in the insular and frontal cortical regions than did control women. These results suggest that women with VVS exhibit an augmentation of genital sensory processing, which is similar to that observed for a variety of syndromes causing hypersensitivity, including fibromyalgia, idiopathic back pain, irritable bowel syndrome, and neuropathic pain.
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PMID:Neural correlates of painful genital touch in women with vulvar vestibulitis syndrome. 1583 75

The objective of this short review is to identify the particularities of women with endometriosis, especially those complaining of pain and with the most severe lesions. Genetic aberrations play, with a high probability, a major role in the development of this disease, its severity, its tendency to recur and also in its capacity to degenerate. The abnormalities of the endometrium, with exacerbated biological activities, are an example. The woman with endometriosis seems more sensitive to pain through various mechanisms, such as central hypersensitivity and decrease threshold to somatoceptive pain and several associated psychological disorders. Endometriosis is often associated with other painful conditions such as irritable bowel syndrome, interstitial cystitis and fibromyalgia. Finally, also appears also to have a higher risk to develop non Hodgkin's lymphoma or ovarian cancer. These particularities, some of them being still speculative or controversial, should be known in routine practise, in order to offer a better multidisciplinary management, not only for short term, but also long term issues.
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PMID:[Women with endometriosis: are they different from others?]. 1589 10

Irritable bowel syndrome (IBS) is one of several highly prevalent, multi-symptom gastrointestinal motility disorders that have a wide clinical spectrum and are associated with symptoms of gastrointestinal dysmotility and visceral hypersensitivity. Symptom overlap and comorbidity between IBS and other gastrointestinal motility disorders (eg, chronic constipation, functional dyspepsia, gastroesophageal reflux disease), with gastrointestinal disorders that are not related to motility (eg, celiac disease, lactose intolerance), and with somatic conditions (eg, fibromyalgia, chronic fatigue syndrome), are frequent. The clinical associations and pathophysiologic links between IBS and these disorders continue to be explored. This review discusses overlapping symptoms and comorbidity of IBS with select gastrointestinal and non-gastrointestinal disorders and attempts to identify commonalities among these conditions.
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PMID:Symptom overlap and comorbidity of irritable bowel syndrome with other conditions. 1604 9

Fibromyalgia syndrome (FM) is a common chronic pain condition that affects at least 2% of the adult population in the USA and other regions in the world where FM is studied. Prevalence rates in some regions have not been ascertained and may be influenced by differences in cultural norms regarding the definition and attribution of chronic pain states. Chronic, widespread pain is the defining feature of FM, but patients may also exhibit a range of other symptoms, including sleep disturbance, fatigue, irritable bowel syndrome, headache, and mood disorders. Although the etiology of FM is not completely understood, the syndrome is thought to arise from influencing factors such as stress, medical illness, and a variety of pain conditions in some, but not all patients, in conjunction with a variety of neurotransmitter and neuroendocrine disturbances. These include reduced levels of biogenic amines, increased concentrations of excitatory neurotransmitters, including substance P, and dysregulation of the hypothalamic-pituitary-adrenal axis. A unifying hypothesis is that FM results from sensitization of the central nervous system. Establishing diagnosis and evaluating effects of therapy in patients with FM may be difficult because of the multifaceted nature of the syndrome and overlap with other chronically painful conditions. Diagnostic criteria, originally developed for research purposes, have aided our understanding of this patient population in both research and clinical settings, but need further refinement as our knowledge about chronic widespread pain evolves. Outcome measures, borrowed from clinical research in pain, rheumatology, neurology, and psychiatry, are able to distinguish treatment response in specific symptom domains. Further work is necessary to validate these measures in FM. In addition, work is under way to develop composite response criteria, intended to address the multidimensional nature of this syndrome. A range of medical treatments, including antidepressants, opioids, nonsteroidal antiinflammatory drugs, sedatives, muscle relaxants, and antiepileptics, have been used to treat FM. Nonpharmaceutical treatment modalities, including exercise, physical therapy, massage, acupuncture, and cognitive behavioral therapy, can be helpful. Few of these approaches have been demonstrated to have clear-cut benefits in randomized controlled trials. However, there is now increased interest as more effective treatments are developed and our ability to accurately measure effect of treatment has improved. The multifaceted nature of FM suggests that multimodal individualized treatment programs may be necessary to achieve optimal outcomes in patients with this syndrome.
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PMID:Fibromyalgia syndrome: review of clinical presentation, pathogenesis, outcome measures, and treatment. 1607 56

Fibromyalgia syndrome (FM) is a common, often debilitating and intractable, chronic, generalized pain condition. The development of effective therapies to treat FM has been hindered by a lack of understanding of fundamental mechanisms in the etiology of FM. In view of prominent characteristics that FM shares with other generalized pain conditions, we suggest that a key mechanism in such disorders may be that of altered activity in the subdiaphragmatic vagus nerve. Specifically, we propose that activity in vagal afferents, arising from the gastrointestinal tract, and sympathoadrenal function mediate a contribution of stress to FM and its strong association with irritable bowel syndrome. An important prediction of the proposed mechanism is that interventions that selectively modulate activity in specific populations of subdiaphragmatic afferents might be used to treat the symptoms of FM and other generalized pain syndromes.
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PMID:Fibromyalgia: the nerve of that disease. 1607 58

The fibromyalgia syndrome (FM) seems an unlikely candidate for classification as a neuropathic pain. The disorder is diagnosed based on a compatible history and the presence of multiple areas of musculoskeletal tenderness. A consistent pathology in either the peripheral or central nervous system (CNS) has not been demonstrated in patients with FM, and they are not at higher risk for diseases of the CNS such as multiple sclerosis or of the peripheral nervous system such as peripheral neuropathy. A large proportion of FM sufferers have accompanying symptoms and signs of uncertain etiology, such as chronic fatigue, sleep disturbance, and bowel/bladder irritability. With the exception of migraine headaches and possibly irritable bowel syndrome, the accompanying disorders are clearly not neurological in origin. The impetus to classify the FM as a neuropathic pain comes from multiple lines of research suggesting widespread pain and tenderness are associated with chronic sensitization of the CNS. An examination of how the term neuropathic pain is defined reveals a conceptual split into 2 partially overlapping groups of disorders: those with demonstrable pathology in the nervous system and those characterized primarily by enduring dysfunction in the nervous system. Requiring demonstrable pathology in the nervous system in the definition of neuropathic pain is the traditional approach. The expansion of the definition to require only enduring nervous system dysfunction is less palatable because it opens the classification to many disorders of uncertain etiology, including complex regional pain syndrome. As it is uncertain which of the many different chronic pain syndromes include an enduring component of central sensitization, restricting the term "neuropathic pain" to those disorders with a primary etiology clearly related to the peripheral or CNS is prudent and consistent with clinical practice.
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PMID:Is fibromyalgia a neuropathic pain syndrome? 1607 59

Chronic muscle pain (myalgia) is a common problem throughout the world. Seemingly simple, it is actually a difficult problem for the clinician interested in determining the aetiology of the pain, as well as in managing the pain. The two common muscle pain conditions are fibromyalgia and myofascial pain syndrome. Fibromyalgia is a chronic, widespread muscle tenderness syndrome, associated with central sensitisation. It is often accompanied by chronic sleep disturbance and fatigue, visceral pain syndromes like irritable bowel syndrome and interstitial cystitis. Myofascial pain syndrome is an overuse or muscle stress syndrome characterised by the presence of trigger points in muscle. The problem these syndromes pose lies not in making the diagnosis of muscle pain. Rather, it is the need to identify the underlying cause(s) of persistent or chronic muscle pain in order to develop a specific treatment plan. Chronic myalgia may not improve until the underlying precipitating or perpetuating factor(s) are themselves managed. Precipitating or perpetuating causes of chronic myalgia include structural or mechanical causes like scoliosis, localised joint hypomobility, or generalised or local joint laxity; and metabolic factors like depleted tissue iron stores, hypothyroidism or Vitamin D deficiency. Sometimes, correction of an underlying cause of myalgia is all that is needed to resolve the condition.
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PMID:A review of myofascial pain and fibromyalgia--factors that promote their persistence. 1625 10

The association between migraine and functional gastrointestinal disorders has been confirmed by many clinical observations and epidemiological studies. In most patients during the attacks of migraine, apart from various neurological and vascular symptoms, gastrointestinal disturbances occur including nausea, vomiting, abdominal pain or diarrhea. Functional gastrointestinal disorders, such as irritable bowel syndrome (IBS), are reported in migraine patients in periods between the attacks as well. On the other hand 23-53% of IBS patients have frequent headaches. Migraine and IBS often coexist with fibromyalgia and other chronic pain syndromes and functional disorders. Migraine and IBS affect approximately 10-20% of the general population, usually young adults. Both diseases are more prevalent in women, perhaps due to the role of estrogen in their pathogenesis. Looking for the common pathogenetic mechanisms of IBS and migraine the role of the brain-gut axis, neuroimmune and neuroendocrine interactions are being considered. The influence of stress on symptom occurrence and severity seems to be associated with hyperactivity of the hypothalamic-pituitary-adrenal axis. The enteric nervous system as a source of numerous neurotransmitters and visceral reflexes is a plausible common pathogenic link between IBS and migraine. In particular serotonin being the main neurotransmitter of the gastrointestinal tract plays a relevant role in the pathogenesis of IBS as well as migraine. Nowadays, agonists and antagonists of serotoninergic receptors are the most efficacious drugs for IBS and migraine therapy. Some side effects of triptans, 5-HT(1B/D) agonists, used in migraine treatment may be connected with the influence of triptans on the gastrointestinal functions. A better understanding of the relationship between migraine and IBS may result in more effective treatment of both diseases.
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PMID:[Migraine and irritable bowel syndrome]. 1641 71

Fibromyalgia is a chronic syndrome, characterized by widespread body pain and pain at specific tender points, whose etiology and pathogenesis is still unknown. Patient can also exhibit a range of other symptoms including irritable bowel syndrome, chest pain, anxiety, fatigue, sleep disturbance, headache. The prevalence of fibromyalgia ranges from 1-3% in the general population, and the condition is more common among female than males. Contrary to the situation a few years ago, the most widely accepted hypothesis now evoke central nervous system mechanisms, whose local functions could influence also periferical microvascular activity at tender points. There are many findings supporting the hypothesis of different endogenic and exogenic factors that lead to chronic local hypoxia in muscle tissue. Currently, therapy is polipragmatic and is aimed at reducing the pain. A range of medical treatment had been used to treat fibromyalgia. Pharmacological therapy aims to enhance the pain threshold and to support sleep. Nonpharmaceutical treatment modalities, such as exercise, massage, idrotherapy can be helpful. Future studies should investigate the possible benefits of new strategies that may combine the effects of hot pool water, stretching exercises, massage and relaxation benefits of balneotherapy.
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PMID:[Fibromyalgic syndrome: new perspectives in rehabilitation and management. A review]. 1651 4

Fibromyalgia (FMS) is a debilitating disorder characterized by chronic diffuse muscle pain, fatigue, sleep disturbance, depression and skin sensitivity. There are no genetic or biochemical markers and patients often present with other comorbid diseases, such as migraines, interstitial cystitis and irritable bowel syndrome. Diagnosis includes the presence of 11/18 trigger points, but many patients with early symptoms might not fit this definition. Pathogenesis is still unknown, but there has been evidence of increased corticotropin-releasing hormone (CRH) and substance P (SP) in the CSF of FMS patients, as well as increased SP, IL-6 and IL-8 in their serum. Increased numbers of activated mast cells were also noted in skin biopsies. The hypothesis is put forward that FMS is a neuro-immunoendocrine disorder where increased release of CRH and SP from neurons in specific muscle sites triggers local mast cells to release proinflammatory and neurosensitizing molecules. There is no curative treatment although low doses of tricyclic antidepressants and the serotonin-3 receptor antagonist tropisetron, are helpful. Recent nutraceutical formulations containing the natural anti-inflammatory and mast cell inhibitory flavonoid quercetin hold promise since they can be used together with other treatment modalities.
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PMID:Fibromyalgia--new concepts of pathogenesis and treatment. 1656 42


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