Headache and other types of chronic pain

OBJECTIVE: To compare pain severity, disability, psychological distress, and quality of life between patients with headache and nonheadache treatment-seeking chronic pain patients. METHODS: Six hundred forty-three patients seeking treatment at a university pain clinic were divided into 3 categories based on primary pain complaint and the presence of focal or diffuse pain complaints: headache, nonheadache focal (pain involving <50% of the body), and nonheadache diffuse (pain involving >/=50% of the body). Patients completed questionnaires to identify pain severity, disability, depression, anxiety, and quality of life. RESULTS: Patients with headache differed from nonheadache patients for all evaluated parameters. Average pain severity on a 0 to 10 point severity scale was 5.55 for headache, 6.93 for nonheadache focal, and 8.05 for nonheadache diffuse. Pain occurred an additional 1.51 to 1.71 days per week for patients without headache. Compared to patients with headache, patients without headache reported greater frequency of reduced daily activities and complete disability related to pain. In addition, patients without headache and with diffuse pain reported more depression (78.2% vs. 45.8%) and anxiety (70.0% vs. 39.1%) than patients with headache. Quality of life measures were significantly reduced in patients with either nonheadache focal or diffuse conditions compared to patients with headache. CONCLUSIONS: Even when considering patients with focal rather than diffuse chronic pain complaints, patients with headache are dissimilar from other patients with chronic pain. Pain severity, frequency, disability, psychological distress, and quality of life are significantly more prominent or impaired in patients with chronic pain without headache compared to patients with headache.     

Factors associated with burden of primary headache in a specialty clinic

OBJECTIVE: To examine factors associated with social, occupational, and psychological burden of common primary headache (migraine and tension-type headache). BACKGROUND: The personal and social burden of primary headache is high. Health, occupational, social, and psychological factors contributing to burden in people with disabling headache have not been fully unravelled. METHODS: One hundred eighty consecutive patients with either migraine or tension-type headache attending a specialty headache outpatient clinic for the first time were evaluated over a 9-month period. Headache subtype was operationally defined according to International Headache Society criteria. Headache frequency, duration, and severity were recorded. Occupational and social disability were quantified using the Migraine Disability Assessment questionnaire. Psychological burden was quantified using the 28-item General Health Questionnaire, the Beck Depression Inventory, and the State-Trait Anxiety Inventory. Premorbid vulnerability to life stress was quantified using the neuroticism subscale of the Eysenck Personality Inventory. RESULTS: Patients with frequent (chronic) headache scored higher on the Migraine Disability Assessment questionnaire and had higher Beck Depression Inventory and General Health Questionnaire depression scores than those with less frequent (episodic) headache. Frequency of headache, but not pain severity, duration, or diagnosis, predicted both Migraine Disability Assessment total disability and General Health Questionnaire/Beck Depression Inventory depression. Neuroticism was predictive of depression but not disability. Patients with chronic migraine had the highest depression and disability scores. CONCLUSION: The number of days per month with headache is a key determinant of headache-related burden in those attending specialty clinics. Frequent (chronic) headache is associated with significantly higher psychopathology scores and general social impairment, but the direction of this relationship is not clear. Those with migraine and chronicity are the most impaired.     

Disability and chronic posttraumatic headache

OBJECTIVE: To test the hypothesis that chronic posttraumatic headache is associated with greater severity and psychological distress than headache of nontraumatic origin. METHODS: Two hundred eighty-nine consecutive patients with chronic headache attending a university headache clinic were evaluated. Questionnaires about headache symptoms, quality of life (Medical Outcome Survey SF-36 Health Survey), and psychological distress were completed. RESULTS: Frequent headache (>4 days per week) occurred more often with traumatic (84%) than nontraumatic headache (60%). Traumatic headache resulted in greater reduced activity (3.31 +/- 1.06 days per week versus 2.62 +/- 1.11 days per week with nontraumatic headache; P<.001) and complete disability (2.89 +/- 1.17 days per week versus 2.25 +/- 1.17 days per week with nontraumatic headache; P<.001). Physical function was also rated significantly lower in patients with traumatic headache (SF-36 score: 59.8 +/- 27.7 versus 71.6 +/- 26.4 with nontraumatic headache; P<.01). These differences were not attributable to differences in headache frequency or gender between patients with traumatic and nontraumatic headache. Psychological symptoms were similar between patients with traumatic and nontraumatic chronic headache. CONCLUSIONS: Chronic traumatic headache is associated with increased headache frequency and disability compared with nontraumatic headache. Headache evaluation should include an investigation for origin of headache and consideration for more aggressive treatment in patients with traumatic headache.     

Migraine disability assessment (MIDAS) score: relation to headache frequency,pain intensity,and headache symptoms

OBJECTIVE: To determine the extent to which variation in the Migraine Disability Assessment (MIDAS) score is associated with headache frequency, pain intensity, headache symptoms, gender, and employment status. BACKGROUND: The MIDAS questionnaire is a 7-item questionnaire (with 5 scored items) designed to measure headache-related disability, to improve physician-patient communication, and to identify patients with high treatment needs. METHODS: Data from 3 population-based studies (total sample, n = 397) conducted in the United States and the United Kingdom were used to evaluate the relationship between headache features (attack frequency, pain intensity, pain quality, and associated symptoms) and MIDAS score. Data on headache features were collected by telephone using a standardized interview. The MIDAS questionnaire was completed shortly after the telephone interview. General linear models were used to determine the extent to which population variation in the MIDAS score was explained by headache features. RESULTS: Using linear regression, variables for all headache features (ie, headache frequency, pain intensity, pain quality, and associated symptoms) and demographic characteristics explained only 22% of the variation in MIDAS scores. Almost all (19.9%) the explained variance was accounted for by average pain intensity (12.0%), number of headache days (6.1%), and exacerbation of pain with movement (1.8%). When pain intensity and headache frequency were included in the model, no statistically significant differences in MIDAS scores were observed by gender or employment status. Although explaining only 2.1% of the variance, age was significantly associated with MIDAS scores, with those under 25 years demonstrating higher MIDAS scores than other age groups. No other variables (ie, frequency of occurrence of associated symptoms and other measures of quality of pain) were associated with MIDAS scores. CONCLUSIONS: Challenges to the utility of the MIDAS as a measure include whether headache-related disability is largely a function of other routine headache features and whether MIDAS is inherently biased based on work status and gender. While the MIDAS score was associated with headache frequency and average pain score, these two headache features explain only a modest proportion of the variation in MIDAS scores. Additionally, gender and work status were not related to MIDAS scores. These findings suggest that the MIDAS score captures information about disability that is not inherent to other headache features and is independent of gender and work status.     

Identification of patients with headache at risk of psychological distress

OBJECTIVE: To test the hypothesis that anxiety and depression are associated with headache frequency, severity, and disability. BACKGROUND: There is significant comorbidity between chronic headache and psychological distress. Headache associated with anxiety or depression tends to be more severe and often requires supplementary psychological treatment in addition to headache therapy. Therefore, the identification of patients with headache who are at risk of psychological distress is important. METHODS: One hundred twenty-seven consecutive patients with headache attending a university headache clinic were evaluated. Questionnaires about headache symptoms and psychological distress were completed. Comparisons were made between psychological distress and headache frequency, severity, and disability. RESULTS: Depression and anxiety were significantly greater in the subjects of this study who had frequent headache (>4 days per week) and frequent headache-associated disability (activities reduced or prohibited because of headache >3 days per week). Subjects who reported their headache severity as typically severe were no more likely to report depression or anxiety than those with mild or moderate headache severity. Quality-of-life measures of physical and social functioning, emotional distress, and general health and vitality were reduced in subjects with frequent episodes of headache-associated disability. All areas, with the exception of general health perception, were reduced in subjects with frequent headache. Severe headache was associated with reductions in role and social functioning. CONCLUSIONS: Frequent headache and frequent disability are associated with depression, anxiety, and impaired quality of life. Reports of typical headache severity are less likely to correlate with psychological distress. Therefore, patients with headache who report frequent headache or frequent periods of headache-related disability should be further evaluated for the presence of psychological disturbance.     

Changes in Clinical Parameters in Patients with Tension-type Headache Following Massage Therapy: A Pilot Study

Abstract

Complementary and alternative medicine approaches to treatment for tension-type headache are increasingly popular among patients, but evidence supporting its efficacy is limited. The objective of this study was to assess short term changes on primary and secondary headache pain measures in patients with tension-type headache (TTH) receiving a structured massage therapy program with a focus on myofascial trigger point therapy. Participants were enrolled in an open label trial using a baseline control with four 3-week phases: baseline, massage (two 3-week phases) and follow-up. Twice weekly, 45-minute massage sessions commenced following the baseline phase. A daily headache diary was maintained throughout the study in which participants recorded headache incidence, intensity, and duration. The Headache Disability Index was administered upon study entry and at 3-week intervals thereafter. 18 subjects were enrolled with 16 completing all headache diary, evaluation, and massage assignments. Study participants reported a median of 7.5 years with TTH. Headache frequency decreased from 4.7±0.7 episodes per week during baseline to 3.7±0.9 during treatment period 2 (P<0.001); reduction was also noted during the follow-up phase (3.2±1.0). Secondary measures of headache also decreased across the study phases with headache intensity decreasing by 30% (P<0.01) and headache duration from 4.0±1.3 to 2.8±0.5 hours (P<0.05). A corresponding improvement in Headache Disability Index was found with massage (P<0.001). This pilot study provides preliminary evidence for reduction in headache pain and disability with massage therapy that targets myofascial trigger points, suggesting the need for more rigorously controlled studies.     

Changes in Clinical Parameters in Patients with Tension-type Headache Following Massage Therapy: A Pilot Study

Complementary and alternative medicine approaches to treatment for tension-type headache are increasingly popular among patients, but evidence supporting its efficacy is limited. The objective of this study was to assess short term changes on primary and secondary headache pain measures in patients with tension-type headache (TTH) receiving a structured massage therapy program with a focus on myofascial trigger point therapy. Participants were enrolled in an open label trial using a baseline control with four 3-week phases: baseline, massage (two 3-week phases) and follow-up. Twice weekly, 45-minute massage sessions commenced following the baseline phase. A daily headache diary was maintained throughout the study in which participants recorded headache incidence, intensity, and duration. The Headache Disability Index was administered upon study entry and at 3-week intervals thereafter. 18 subjects were enrolled with 16 completing all headache diary, evaluation, and massage assignments. Study participants reported a median of 7.5 years with TTH. Headache frequency decreased from 4.7±0.7 episodes per week during baseline to 3.7±0.9 during treatment period 2 (P<0.001); reduction was also noted during the follow-up phase (3.2±1.0). Secondary measures of headache also decreased across the study phases with headache intensity decreasing by 30% (P<0.01) and headache duration from 4.0±1.3 to 2.8±0.5 hours (P<0.05). A corresponding improvement in Headache Disability Index was found with massage (P<0.001). This pilot study provides preliminary evidence for reduction in headache pain and disability with massage therapy that targets myofascial trigger points, suggesting the need for more rigorously controlled studies.     

The three dimensions of headache impact: pain, disability and affective distress

It is increasingly recognized that pain measures alone provide incomplete information about the impact of pain on functioning or quality-of-life. A wide range of measures that promise to provide additional information about the impact of pain on people's lives are thus coming into use. In order to clarify the construct of headache impact, we attempted to identify the dimensions assessed by a set of 22 headache-impact measures and to identify the specific measures that best assessed each of these headache-impact dimensions. Adults (n=329) with frequent benign headache disorders completed a comprehensive assessment battery that included 22 headache-impact measures. Factor analysis was then used to identify dimensions underlying the headache-impact measures. Three factors labeled Affective Distress, Pain Density and Disability best accounted for correlations among headache-impact measures. Interfactor correlations ranged between 0.37 and 0.20, suggesting three correlated but separable impact dimensions. These results suggest the construct of headache impact needs to be broadened beyond pain and disability to include affective distress. An adequate assessment of the impact of recurrent headache disorders in clinical trials and other research may require measures from all three of the headache-impact dimensions identified here.     

Idiopathic intracranial hypertension headache

Idiopathic intracranial hypertension (IIH) is a disorder of increased intracranial pressure that may have papilledema with normal imaging study results. Headache is the most frequent symptom. Although the headache characteristics are indistinguishable from the symptoms of migraine headache, accompanying symptoms of increased intracranial pressure, such as pulsatile tinnitus, transient visual obscurations, and radicular neck pain, may aid in the diagnosis. Magnetic resonance imaging, including venography, is essential for the diagnosis of the primary idiopathic intracranial hypertension. Medical treatment for the headache includes weight loss for obese patients, diuretic therapy, and migraine preventive medications. If medical therapy does not abolish the headache, surgical options should be considered. Because patients with IIH have a poor quality of life, patient education and supportive materials are important.     

Migraine frequency and intensity: relationship with disability and psychological factors

BACKGROUND: Migraine can be disabling, but it varies greatly in frequency and intensity between individuals. It is not clear which clinical features have the greatest impact on a migraineur's quality of life. OBJECTIVE: To determine the influence of headache intensity and frequency on headache-related disability. METHODS: Patients who were referred to a headache clinic and given a diagnosis of migraine with or without aura or transformed migraine (n = 115) were divided into different groups based on headache frequency and mean headache intensity. Headache frequency was determined from patient diaries. Headache intensity also was assessed from patient diaries and from scores on the pain severity scale of the Multidimensional Pain Inventory (MPI). Headache-related disability was assessed with the Headache Disability Inventory and by scores on the activity interference scale of the MPI. The degree of depression present was assessed with the Beck Depression Inventory, and emotional distress was measured by scores on the affective distress scale of the MPI. RESULTS: In our patient population, higher mean headache intensity levels were associated with higher levels of headache-related disability. Our results also suggested that increased headache intensity is associated with higher levels of depression and emotional distress, although this correlation was statistically significant in only 1 of 4 comparisons. Headache frequency did not correlate with disability, depression, or emotional distress. CONCLUSIONS: For a headache referral population, headache intensity appears to be a major determinant of headache-related disability, and it also correlates, to some extent, with the degree of depression and emotional distress present. Headache frequency was not clearly related to disability or psychological factors.     

Prevalence and burden of chronic migraine in adolescents: results of the chronic daily headache in adolescents study (C-dAS)

(Headache 2011;51:693‐706) Objective.— To estimate the prevalence of chronic migraine (CM) among adolescents and to describe the epidemiologic profile, headache characteristics, disability, and healthcare utilization of adolescents with CM in the USA. Background.— Chronic daily headache (CDH) and CM occur in children and adolescents, but are poorly understood in these populations because their presentation is different from that in adults. It may be difficult to assign a definitive diagnosis to young people suffering from CDH because symptoms may fail to meet the criteria for one of the CDH subtypes. Methods.— A large sample of households with at least one resident aged 12 to 19 years was selected in balance with the US Census. Data were collected in 3 phases: (1) mailed questionnaire; (2) telephone interview; and (3) 30‐day interactive voice response system diary. CM prevalence was estimated by adapting the second edition of the International Classification of Headache Disorders criteria for CM to include pediatric migraine diagnostic criteria. The population was stratified for medication overuse. Medication overuse was defined as 15 or more days per month of acute medication use. Included in the study were measures of headache characteristics, headache impact (Headache Impact Test), disability (Pediatric Migraine Disability Assessment), and healthcare and medication use. Data are reported on subjects 12 to 17 years of age only. Results.— The US adolescent (12‐17 years) prevalence rate for CM was 0.79% (0.00‐1.70) excluding those with medication overuse and 1.75% (0.62‐2.89) when adolescents with medication overuse were included. The majority of adolescents with CM had Headache Impact Test scores greater than or equal to 60, indicating severe headache impact, and mean Pediatric Migraine Disability Assessment scores greater than 17, indicating severe headache and disability. The majority of adolescents with CM (approximately 60%) had not visited a healthcare provider in the previous year and less than one in 5 reported taking medications to prevent headaches during the last month. Conclusions.— Results suggest that CM occurs less frequently in adolescents than adults, but like adults, adolescents are severely burdened by the disorder. Data support an unmet medical need; however, the development of optimal criteria for diagnosing adolescents with CM is critical to fully understanding how medical needs can be met within this complex population.     

Effect of guided imagery on quality of life for patients with chronic tension-type headache

OBJECTIVE: To determine the effect of adjuvant guided imagery on patients with chronic tension-type headache. BACKGROUND: Management of chronic tension-type headache often requires a combination of pharmacological and nonpharmacological therapies. Guided imagery is a relaxation technique based on visualizing pleasant images and body awareness. METHODS: One hundred twenty-nine patients with chronic tension-type headache completed the Headache Disability Inventory and the Medical Outcomes Study Short Form (SF-36) at their initial visit to a specialty headache center and again 1 month after the visit. In addition to individualized headache therapy, patients listened to a guided imagery audiocassette tape daily for the month. One hundred thirty-one control subjects received individualized therapy without guided imagery. RESULTS: Controls and the patients who listened to the guided imagery tape improved in headache frequency, headache severity, patient global assessment, quality of life, and disability caused by headache. More guided imagery patients (21.7%) than controls (7.6%) reported that their headaches were much better (P = .004). The guided imagery patients had significantly more improvement than the controls in three of the SF-36 domains: bodily pain (95% CI; guided imagery patients 11.0, controls 0.2), vitality (95% CI; guided imagery patients 10.9, controls 1.7), and mental health (95% CI; guided imagery patients 7.8, controls 0.4). CONCLUSIONS: Guided imagery is an effective adjunct therapy for the management of chronic tension-type headache.     

Needle acupuncture in tension-type headache: a randomized, placebo-controlled study

A study with needle acupuncture was performed in tension-type headache employing a new placebo acupuncture METHOD: Sixty-nine patients (mean age 48.1 years, SD = 14.1) fulfilling the International Headache Society criteria for tension-type headache were randomly assigned to verum or placebo condition. No significant differences between placebo and verum with respect to visual analogue scale and frequency of headache attacks could be observed immediately, 6 weeks and 5 months after the end of treatment. There was a significant but weak improvement in quality of life parameters (clinical global impressions, Nottingham Health Profile) after verum treatment. In decision tree analyses, the changes in clinical global impressions and headache frequency depended significantly on primary headache frequency with a limit value of 24.5 days headache per month. High values in the von Zerssen Depression Score resulted in high mean visual analogue scale values.     

Predictors of disability in migraineurs referred to a tertiary clinic: neck pain, headache characteristics, and coping behaviors

OBJECTIVE: The aim of this retrospective study was to determine if neck pain, select headache characteristics, and migraine-related coping response predicted disability in migraineurs referred to a tertiary headache clinic. METHODS: Patients seeking treatment at a neurology-based headache clinic were included if they met diagnostic criteria for migraine with or without aura according to the International Headache Society (1.1, 1.2). Subjects completed a self-report headache history form and a detailed headache and neurologic examination. The headache history form assessed: 1)weekly headache frequency; 2) number of weekly severe headaches; 3) presence of migraine-related neck pain; 4) photophobia; 5) phonophobia; 6) headache duration; 7) vomiting; 8) monthly headache-free days; and 9) behavioral coping style. Disability was assessed using a self-report inventory (HIT-6). RESULTS: Self-reported headache severity, frequency, and headache-free days were strongly associated with disability. The presence of neck pain during migraine and one's coping response to migraine significantly predicted disability independent of headache characteristics. CONCLUSIONS: These data suggest the need for prospective research exploring the causal mechanisms by which neck pain and coping response influence disability and underscores the importance of multidisciplinary approaches to headache management.     

Gender differences in treatment-seeking chronic headache sufferers

OBJECTIVE: To identify gender differences within a group of patients seeking treatment for chronic headache. Previous studies of the general population have reported differences in headache symptoms, frequency, disability, and psychological distress, with women affected with more severe and disabling symptoms than men. This study evaluated these features in a population seeking treatment. METHODS: Two hundred fifty-eight consecutive patients with headache attending a university headache clinic were evaluated with questionnaires about headache symptoms and psychological distress. Comparisons between men and women were made for headache symptoms, severity, frequency, trigger factors, comorbid depression and anxiety, and response to treatment. RESULTS: There were no gender differences in headache symptoms, frequency, severity, and duration. Headache triggers were gender-specific, with men more likely to endorse exercise and women more likely to endorse stress and exposure to odors. Psychological comorbidity was similar among men and women seeking treatment, with a mean Beck Depression Inventory score of 10 and a mean Spielberger trait anxiety score of 39 for both men and women. Disability was greater in men, with 46% reporting restrictions in activities more than 3 days per week because of headache compared with 29% of women. In addition, men were more likely to contribute headache control to external figures than women. CONCLUSIONS: Patients seeking treatment for chronic headache do not have the same gender-specific differences that have been reported in general population surveys. Men who seek treatment for headache are more likely to have significant disability, and are equally likely to have symptoms of depression and anxiety as women who seek treatment. Clinical and research investigations of headache triggers need to be gender-specific.     

Clinical features of headache patients with fibromyalgia comorbidity

Our previous study assessed the prevalence of fibromyalgia (FM) syndrome in migraine and tension-type headache. We aimed to update our previous results, considering a larger cohort of primary headache patients who came for the first time at our tertiary headache ambulatory. A consecutive sample of 1,123 patients was screened. Frequency of FM in the main groups and types of primary headaches; discriminating factor for FM comorbidity derived from headache frequency and duration, age, anxiety, depression, headache disability, allodynia, pericranial tenderness, fatigue, quality of life and sleep, and probability of FM membership in groups; and types of primary headaches were assessed. FM was present in 174 among a total of 889 included patients. It prevailed in the tension-type headache main group (35%, p < 0.0001) and chronic tension-type headache subtype (44.3%, p < 0.0001). Headache frequency, anxiety, pericranial tenderness, poor sleep quality, and physical disability were the best discriminating variables for FM comorbidity, with 81.2% sensitivity. Patients presenting with chronic migraine and chronic tension-type headache had a higher probability of sharing the FM profile (Bonferroni test, p < 0.01). A phenotypic profile where headache frequency concurs with anxiety, sleep disturbance, and pericranial tenderness should be individuated to detect the development of diffuse pain in headache patients.     

Predicting disability and quality of life in a community-based sample of women with migraine headache

Migraine is a significant pain problem for almost one third of women in the United States. Little previous research has been conducted regarding the effects of migraine headache on the lives of women migraineurs. The purpose of this report is to determine the contribution of coping, depressive symptomatology, and the chronic pain experience on disability and quality of life in women with migraine. Two hundred and forty-seven women responded to a mailed survey about migraine headache, the chronic pain experience, coping, depressive symptomatology, and quality of life. Data were collected with the following: the Classification and Diagnostic Criteria for Headache Disorders, Cranial Neuralgias, and Facial Pain; the McGill Pain Questionnaire; the Chronic Pain Experience Instrument-Headache; the Coping Strategies Questionnaire; the Center for Epidemiologic Studies-Depression Scale; the Henry Ford Hospital Disability Inventory; and the Migraine-Related Quality of Life Questionnaire. Multiple regression analyses were conducted to determine the amount of variance that could be explained by selected predictor variables. Women ranged in age from 18 to 66 years and migraineurs reported suffering from migraine from 1 to 54 years. Nearly half of the migraineurs (41.5%) reported migraine headaches occurring monthly, and almost a quarter of the sample reported weekly migraines. Migraines were reported to last for several hours (53.4%). Results indicate that migraine headache pain was typically severe and throbbing, lasting for hours to days. The coping, depressive symptomatology, disability, and quality-of-life variables were all significantly correlated. Two separate regression analyses that examined predictor variables and the criterion variables, disability and quality of life, showed that a significant amount of both constructs could be explained by the predictor variables in the model tested. In the first regression analysis, depressive symptomatology, the chronic pain experience, and migraine headache pain accounted for 62.9% of the variance in disability. In the second regression analysis, 64.8% of the variance in quality of life was accounted for by depressive symptomatology, migraine headache pain, and the chronic pain experience. The variance in both outcome variables, disability and quality of life, was accounted for by similar predictor variables: depressive symptomatology, the chronic pain experience, and migraine headache pain. Further study is needed to determine specific personal and illness-related factors, pain characteristics, and coping strategies used that may predict outcomes of migraine headache such as disability, quality of life, helplessness, and other as yet unidentified effects of migraine headache.     

Amitriptyline treatment in chronic drug-induced headache: a double-blind comparative pilot study

OBJECTIVE: To assess the effects of amitriptyline and sudden analgesic withdrawal on headache frequency and quality of life in patients suffering from chronic daily headache related to analgesics abuse. METHODS: Seventeen nondepressed patients with chronic drug-induced headache were included in a 9-week, parallel-group, randomized, double-blind, placebo-controlled study. After abrupt analgesic withdrawal, amitriptyline or an active placebo (trihexyphenidyl) was started. The primary efficacy variable was headache frequency recorded on a headache diary in the last 4 weeks of each treatment. The secondary efficacy variable was quality of life (Nottingham Health Profile). RESULTS: Headache frequency decreased by 45% in the amitriptyline group and by 28% in the trihexyphenidyl group. Amitriptyline enhanced all the dimensions of quality of life and significantly improved emotional reaction and social isolation. CONCLUSION: This pilot study suggests a beneficial effect of amitriptyline on headache frequency and quality of life for patients with chronic drug-induced headache.     

The headache management trial: a randomized study of coordinated care

Context.— Headache is a common, disabling disorder that is frequently not well managed in general clinical practice. Objective.— To determine if patients cared for in a coordinated headache management program would achieve reduced headache disability compared with patients in usual care. Design.— A randomized controlled trial of headache management vs usual care. Setting.— Three distinctly different practice sites: an academic internal medicine practice located in a major east coast city, a staff‐model managed care organization located in a major west coast city, and a community practice in a medium‐sized city in the southeast. Patients.— Individuals 21 years of age or older with chronic tension‐type, migraine, or mixed etiology headache and a Migraine Disability Assessment (MIDAS) score greater than 5, not receiving treatment from a neurologist or headache clinic currently or within the previous 6 months and with an intention to continue general medical care at their current location and to continue their present health insurance coverage for the next 12 months. Interventions.— Active intervention is a headache management program consisting of: (1) a class specifically designed to inform patients about headache types, triggers, and treatment options; (2) diagnosis and treatment by a professional especially trained in headache care (based on US Headache Consortium guidelines); and (3) proactive follow‐up by a case manager. Participation lasted 6 months. Control patients received usual care from their primary care providers. Main Outcome Measures.— The primary efficacy measure reported in this article is a comparison of MIDAS scores of headache disability between the intervention group and the control group at 6 months. Secondary measures were response at 12 months, general health and quality of life, and satisfaction with headache care. Results.— The intervention improved (ie, decreased) MIDAS scores by 7.0 points (95% confidence interval 2.9 to 11.1) more than the control (P = .008) at 6 months. The difference was not affected by site (P = .59 for clinic by intervention interaction), and a trend toward persistent benefit at 12 months (mean difference in improvement 6.8 points, 95% confidence interval ?.3 to 13.9, P = .06) was observed. Quality of life and satisfaction with headache treatment were similarly improved. Conclusions.— Coordinated headache management significantly improved outcomes for patients who, despite contact with the healthcare system for headache, had substantial unmet needs. The intervention in this trial can be implemented practically in a wide range of settings with the expectation that meaningful improvements will accrue.