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2012| August | Volume 15 | Issue 5
Online since
August 24, 2012
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REVIEW ARTICLES
Pathophysiology of migraine
Peter J Goadsby
August 2012, 15(5):15-22
DOI
:10.4103/0972-2327.99993
PMID
:23024559
Migraine is a common disabling brain disorder whose pathophysiology is now being better understood. The study of anatomy and physiology of pain producing structures in the cranium and the central nervous system modulation of the input have led to the conclusion that migraine involves alterations in the sub-cortical aminergic sensory modulatory systems that influence the brain widely.
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17,876
1,749
Tension type headache
Debashish Chowdhury
August 2012, 15(5):83-88
DOI
:10.4103/0972-2327.100023
PMID
:23024570
Tension type headaches are common in clinical practice. Earlier known by various names, the diagnosis has had psychological connotations. Recent evidence has helped clarify the neurobiological basis and the disorder is increasingly considered more in the preview of neurologists. The classification, clinical features, differential diagnosis and treatment of tension type headache are discussed in this paper.
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ORIGINAL ARTICLES
Impact of physician empathy on migraine disability and migraineur compliance
Hatim S Attar, Srinath Chandramani
August 2012, 15(5):89-94
DOI
:10.4103/0972-2327.100025
PMID
:23024571
Aims:
We aim to establish the role that perceived physician empathy plays in determining migraineurs' outcomes and compliance with migraine management plans. We checked for associations between perceived physician empathy and clinical outcomes as well as compliance with management plans.
Materials and Methods:
63 migraineurs were enrolled between July and September 2011. Questionnaire administered at the time of inclusion into the study included self-assessment of disability due to migraine (Migraine Disability Assessment Test) followed by migraineurs' assessment of physician empathy (Consultation and Relational Empathy Measure). Three months later, a telephonic questionnaire ascertained changes in disability due to migraine and compliance with migraine treatment.
Statistical Analysis:
Data was entered in Microsoft Excel 2010 and analyzed using SPSS 17. Pearson's correlation was employed to analyze the significance of relationship between variables.
P
-value of less than 0.05 has been considered statistically significant.
Results:
Statistically significant positive Pearson's correlations are seen between perceived empathy and decrease in migraine disability and symptoms over three months (
P
< 0.05). Significant positive relationships are also seen between perceived empathy and compliance with diet/meal timings, exercising, de-stressing/sleep pattern modification and medications (
P
< 0.05). Self-reported compliance is significantly correlated with improved patient outcomes (
P
< 0.05).
Conclusions:
Substantial positive associations are found between perceived physician empathy and migraineurs' outcomes and compliance with management plans. This emphasizes the importance of empathy in migraineur-physician communication.
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10,257
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Primary headaches in restless legs syndrome patients
Ravi Gupta, Vivekananda Lahan, Deepak Goel
August 2012, 15(5):104-108
DOI
:10.4103/0972-2327.100031
PMID
:23024558
Earlier studies conducted among migraineurs have shown an association between migraine and restless legs syndrome (RLS). We chose RLS patients and looked for migraine to exclude sample bias.
Materials and Methods:
99 consecutive subjects of idiopathic RLS were recruited from the sleep clinic during four months period. Physician diagnosis of headache and depressive disorder was made with the help of ICHD-2 and DSM-IV-TR criteria, respectively. Sleep history was gathered. Severity of RLS and insomnia was measured using IRLS (Hindi version) and insomnia severity index Hindi version, respectively. Chi-square test, one way ANOVA and
t
-test were applied to find out the significance.
Results:
Primary headache was seen in 51.5% cases of RLS. Migraine was reported by 44.4% subjects and other types of 'primary headaches' were reported by 7.1% subjects. Subjects were divided into- RLS; RLS with migraine and RLS with other headache. Females outnumbered in migraine subgroup (χ
2
=16.46,
P
<0.001). Prevalence of depression (χ
2
=3.12,
P
=0.21) and family history of RLS (χ
2
=2.65,
P
=0.26) were not different among groups. Severity of RLS (
P
=0.22) or insomnia (
P
=0.43) were also similar.
Conclusion:
Migraine is frequently found in RLS patients in clinic based samples. Females with RLS are prone to develop migraine. Depression and severity of RLS or insomnia do not affect development of headache.
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REVIEW ARTICLES
The art of history-taking in a headache patient
K Ravishankar
August 2012, 15(5):7-14
DOI
:10.4103/0972-2327.99989
PMID
:23024567
Headache is a common complaint that makes up for approximately 25% of any neurologists outpatient practice. Yet, it is often underdiagnosed and undertreated. Ninety percent of headaches seen in practice are due to a primary headache disorder where there are no confirmatory tests, and neuroimaging studies, if done, are normal. In this situation, a good headache history allows the physician to recognize a pattern that in turn leads to the correct diagnosis. A comprehensive history needs time, interest, focus and establishment of rapport with the patient. When to ask what question to elicit which information, is an art that is acquired by practice and improves with experience. This review discusses the art of history-taking in headache patients across different settings. The nuances of headache history-taking are discussed in detail, particularly the questions related to the time, severity, location and frequency of the headache syndrome in general and the episode in particular. An emphasis is made on the recognition of red flags that help in the identification of secondary headaches.
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ORIGINAL ARTICLES
Prevalence of primary headache disorders in school-going children in Kashmir Valley (North-west India)
A Hameed Malik, Parvaiz A Shah, Yawar Yaseen
August 2012, 15(5):100-103
DOI
:10.4103/0972-2327.100030
PMID
:23024557
Objective
: A prospective prevalence study of primary headache disorders in school going children (8-18 years) in Srinagar district of Kashmir valley was conducted.
Materials and Methods:
The study population comprised of a randomized sample of 5000 school going children in the age group of 8-18 years from various educational institutions of Srinagar city. A self-administered pretested questionnaire was filled by the participants and the diagnosis established by following the International Headache Society criteria (IHS) 2004.
Results
: The overall prevalence of primary headache disorders was found to be 664/1000. The prevalence of tension-type headache and migraine was found to be 50.99% and 26.98%, respectively. The prevalence revealed an upward trend with increasing age with preponderance for female sex.
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REVIEW ARTICLES
Trigeminal autonomic cephalalgias: A review of recent diagnostic, therapeutic and pathophysiological developments
Giorgio Lambru, Manjit S Matharu
August 2012, 15(5):51-61
DOI
:10.4103/0972-2327.100007
PMID
:23024564
The trigeminal autonomic cephalalgias (TACs) are a group of primary headache disorders that are characterized by strictly unilateral trigeminal distribution pain occurring in association with ipsilateral cranial autonomic symptoms. This group includes cluster headache, paroxysmal hemicrania and short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing. These disorders are very painful, often considered to be some of the most painful conditions known to mankind, and consequently are highly disabling. They are distinguished by the frequency of attacks of pain, the length of the attacks and very characteristic responses to medical therapy, such that the diagnosis can usually be made clinically, which is important because it dictates therapy. The management of TACs can be very rewarding for physicians and highly beneficial to patients.
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ORIGINAL ARTICLES
Headache symptoms and indoor environmental parameters: Results from the EPA BASE study
Gretchen E Tietjen, Jagdish Khubchandani, Somik Ghosh, Suchismita Bhattacharjee, JoAnn Kleinfelder
August 2012, 15(5):95-99
DOI
:10.4103/0972-2327.100029
PMID
:23024572
Objective:
The objective of this investigation was to determine the prevalence of migraine and headache symptoms in a national sample of US office employees. Also, we explored the association of headache symptoms with indoor environmental parameters of the work place.
Background:
Sick building syndrome (SBS), which includes headache, is a common global phenomenon, but the underlying environmental cause is uncertain.
Materials and Methods:
We used data from the 1994-1998 US Environmental Protection Agency's (EPA) Building Assessment and Survey Evaluation, a cross-sectional study of workers employed in 100 public and private office buildings across 25 states. The study used a self-administered questionnaire to assess headache frequency and prevalence of self-reported physician-diagnosed (SRPD) migraine. Indoor environmental parameters (IEP) were collected per EPA protocol from each building over a 1-week period and included carbon dioxide, carbon monoxide, temperature, relative humidity, particulate matter, volatile organic compound, illuminance, and sound level. The standards of American Society of Heating, Refrigerating and Air Conditioning Engineers were used to categorize IEP as either within- or out-of-comfort range for human dwelling. These limits delineate whether a parameter value is safe for human dwelling. Out-of-comfort range IEPs are associated with SBS and other human diseases. SRPD migraine and headache frequency were the primary outcome measures of the study. Multivariate logistic regression analyses were employed for the purpose of assessing the association between the outcome variable and IEPs.
Results:
Of the 4326 participants, 66% were females and 60% were between 30 and 49 years. Headache frequency during the last 4 weeks was as follows: None in 31%, 1-3 days in 38%, 1-3 days per week in 18%, and every or almost every workday in 8%. Females had higher SRPD migraine prevalence compared to males (27% vs. 11%,
P
<0.001) and were more likely to report any headache in the last month compared to males (75% vs. 53%,
P
<0.001). Odds of SRPD migraine were higher (
P
<0.05) for those exposed to IEP out-of-comfort range, and odds of exposure to out-of-comfort range IEPs were higher in groups who reported higher headache frequencies.
Conclusions:
Migraine diagnosis and elevated headache frequency are associated with an uncomfortable indoor environment. Periodic assessments and adjustments of IEP may have a beneficial impact on employees who are vulnerable to SBS.
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REVIEW ARTICLES
Migraine, cerebrovascular disease and the metabolic syndrome
Alexandra J Sinclair, Manjit Matharu
August 2012, 15(5):72-77
DOI
:10.4103/0972-2327.100015
PMID
:23024568
Evidence is emerging that migraine is not solely a headache disorder. Observations that ischemic stroke could occur in the setting of a migraine attack, and that migraine headaches could be precipitated by cerebral ischemia, initially highlighted a possibly association between migraine and cerebrovascular disease. More recently, large population-based studies that have demonstrated that migraineurs are at increased risk of stroke outside the setting of a migraine attack have prompted the concept that migraine and cerebrovascular disease are comorbid conditions. Explanations for this association are numerous and widely debated, particularly as the comorbid association does not appear to be confined to the cerebral circulation as cardiovascular and peripheral vascular disease also appear to be comorbid with migraine. A growing body of evidence has also suggested that migraineurs are more likely to be obese, hypertensive, hyperlipidemic and have impaired insulin sensitivity, all features of the metabolic syndrome. The comorbid association between migraine and cerebrovascular disease may consequently be explained by migraineurs having the metabolic syndrome and consequently being at increased risk of cerebrovascular disease. This review will summarise the salient evidence suggesting a comorbid association between migraine, cerebrovascular disease and the metabolic syndrome.
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New daily persistent headache
Alok Tyagi
August 2012, 15(5):62-65
DOI
:10.4103/0972-2327.100011
PMID
:23024565
New daily persistent headache (NDPH) is a chronic headache developing in a person who does not have a past history of headaches. The headache begins acutely and reaches its peak within 3 days. It is important to exclude secondary causes, particularly headaches due to alterations in cerebrospinal fluid (CSF) pressure and volume. A significant proportion of NDPH sufferers may have intractable headaches that are refractory to treatment. The condition is best viewed as a syndrome rather than a diagnosis. The headache can mimic chronic migraine and chronic tension-type headache, and it is also important to exclude secondary causes, particularly headaches due to alterations in CSF pressure and volume. A large proportion of NDPH sufferers have migrainous features to their headache and should be managed with treatments used for treating migraine. A small group of NDPH sufferers may have intractable headaches that are refractory to treatment.
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Neuroimaging and other investigations in patients presenting with headache
Callum W Duncan
August 2012, 15(5):23-32
DOI
:10.4103/0972-2327.99995
PMID
:23024561
Headache is very common. In the United Kingdom, it accounts for 4.4% of primary care consultations, 30% of referrals to neurology services and 0.5-0.8% of alert patients presenting to emergency departments. Primary headache disorders account for the majority of patients and most patients do not require investigation. Warning features (red flags) in the history and on examination help target those who need investigation and what investigations are required. This article summarizes the typical presentations of the common secondary headaches and what neuroimaging and other investigations are appropriate for each headache type.
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The acute and preventative treatment of episodic migraine
Sarah Miller
August 2012, 15(5):33-39
DOI
:10.4103/0972-2327.99998
PMID
:23024562
Episodic migraine is a common debilitating condition with significant worldwide impact. An effective management plan must include acute treatment to relieve the pain and potential disability associated with the attacks and may also include preventative treatments with an aim of decreasing attack frequency and severity in the longer term. Acute treatments must be limited to a maximum of 2-3 days a week to prevent medication overuse headache and focus on simple analgesia, non-steroidal anti-inflammatory drugs and triptans. Preventative treatments are numerous and should be considered when migraine attacks are frequent and or disabling, acute medication is failing, in special circumstances such as hemiplegic migraines or if the patient requests them. All preventative medications must be given at therapeutic doses for at least 6-8 weeks before an adequate trial can be judged ineffective. The most important factor in choosing drugs is the patient and the clinical features of their attack and treatment should be tailored to these. Relative co-morbidities will influence drug choice, as will the side effect profile and the efficacy of the drug. First line preventative drugs include ß-blockers, amitriptyline and anti-epileptic drugs such as topiramate and valproate. Drugs with lower efficacy or poorer side effect profiles include selective serotonin reuptake inhibitors (SSRIs), calcium channel antagonists, gabapentin and herbal medicines.
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Chronic daily headaches
Fayyaz Ahmed, Rajsrinivas Parthasarathy, Modar Khalil
August 2012, 15(5):40-50
DOI
:10.4103/0972-2327.100002
PMID
:23024563
Chronic Daily Headache is a descriptive term that includes disorders with headaches on more days than not and affects 4% of the general population. The condition has a debilitating effect on individuals and society through direct cost to healthcare and indirectly to the economy in general. To successfully manage chronic daily headache syndromes it is important to exclude secondary causes with comprehensive history and relevant investigations; identify risk factors that predict its development and recognise its sub-types to appropriately manage the condition. Chronic migraine, chronic tension-type headache, new daily persistent headache and medication overuse headache accounts for the vast majority of chronic daily headaches. The scope of this article is to review the primary headache disorders. Secondary headaches are not discussed except medication overuse headache that often accompanies primary headache disorders. The article critically reviews the literature on the current understanding of daily headache disorders focusing in particular on recent developments in the treatment of frequent headaches.
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VIEW POINT
Ophthalmoplegic migraine: A critical analysis and a new proposal
Ambar Chakravarty, Angshuman Mukherjee
August 2012, 15(5):2-6
DOI
:10.4103/0972-2327.99985
PMID
:23024560
The nosology, classification and pathophysiology of ophthalmoplegic migraine (OM) remains complex and debatable. A recently proposed classification of OM leaves several caveats. A critical analysis of all reported cases of OM (1993-2010) has been made incorporating the authors' own experience to arrive at a simple, unambiguous and easy to use diagnostic criteria and classification of OM. Between 2005 and 2010, 18 adult cases of OM had been seen whose clinical details are summarized. Most had sixth nerve palsies associated with migraine-like headaches lasting more than 4 days. Other possibilities were carefully excluded. All subjects responded to corticosteroids favorably. We prefer using the term ophthalmoplegia with migraine-like headache (OMLH) rather than OM. We classify OMLH as a migraine subtype (1.7) and into two groups-childhood-onset type (where third nerve palsies and nerve enhancement are common) and adult-onset type (where sixth nerve palsies are more common and nerve enhancement unusual). This clinico-radiological classification does not in any way hint at any difference in pathophysiology between the two groups.
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REVIEW ARTICLES
Other primary headaches
Anish Bahra
August 2012, 15(5):66-71
DOI
:10.4103/0972-2327.100012
PMID
:23024566
The 'Other Primary Headaches' include eight recognised benign headache disorders. Primary stabbing headache is a generally benign disorder which often co-exists with other primary headache disorders such as migraine and cluster headache. Primary cough headache is headache precipitated by valsalva; secondary cough has been reported particularly in association with posterior fossa pathology. Primary exertional headache can occur with sudden or gradual onset during, or immediately after, exercise. Similarly headache associated with sexual activity can occur with gradual evolution or sudden onset. Secondary headache is more likely with both exertional and sexual headache of sudden onset. Sudden onset headache, with maximum intensity reached within a minute, is termed thunderclap headache. A benign form of thunderclap headache exists. However, isolated primary and secondary thunderclap headache cannot be clinically differentiated. Therefore all headache of thunderclap onset should be investigated. The primary forms of the aforementioned paroxysmal headaches appear to be Indomethacin sensitive disorders. Hypnic headache is a rare disorder which is termed 'alarm clock headache', exclusively waking patients from sleep. The disorder can be Indomethacin responsive, but can also respond to Lithium and caffeine. New daily persistent headache is a rare and often intractable headache which starts one day and persists daily thereafter for at least 3 months. The clinical syndrome more often has migrainous features or is otherwise has a chronic tension-type headache phenotype. Management is that of the clinical syndrome. Hemicrania continua straddles the disorders of migraine and the trigeminal autonomic cephalalgias and is not dealt with in this review.
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Behavioural management of migraine
Helen Brown, Craig Newman, Rupert Noad, Stuart Weatherby
August 2012, 15(5):78-82
DOI
:10.4103/0972-2327.100018
PMID
:23024569
It is important to recognise that migraine is a 'biological' and not a 'psychological' entity. However, psychological factors can be involved in migraine in 4 different ways:- 1) Migraines can be triggered by psychological stressors; 2) Severe migraine can itself be a cause of significant psychological stress which can, in turn, exacerbate the problem; 3) Even if psychological stress is not significantly involved in the genesis of the headache, pain management techniques can help people cope with their pain more effectively; 4) Longitudinal data demonstrate a complex bidirectional association between mood disorders and migraine. Treatment of a co-existing mood disorder, for example with cognitive behavioural techniques, may therefore reduce the impact of migraine. It would thus appear logical to view medical and psychological approaches as potentially synergistic rather than mutually exclusive. Functional imaging indicates that cognition, emotions, and pain experiences change the way the brain processes pain inputs. This may provide a physiological rationale for psychological interventions in pain management. As most studies of psychological management of migraine have been relatively small and the approach often varies between clinicians, the magnitude of benefit, optimum method of delivery, and the length of intervention are uncertain.
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EDITORIAL
Headache supplement
Alok Tyagi
August 2012, 15(5):1-1
DOI
:10.4103/0972-2327.99984
PMID
:23024556
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