the “chronification” of migraine · the “chronification” of migraine jennifer bickel, md...
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The “Chronification” of
Migraine
Jennifer Bickel, MD Medical Director, Comprehensive Headache Clinic
Children’s Mercy Hospital
Division of Neurology
Associate Professor of Pediatrics
University of Missouri-Kansas City
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The “Horrification” of
Migraine
Jennifer Bickel, MD Medical Director, Comprehensive Headache Clinic
Children’s Mercy Hospital
Division of Neurology
Associate Professor of Pediatrics
University of Missouri-Kansas City
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Overview
Define chronic migraine
Pathophysiology
Risk factors
“Pearls” for chronic headache
management
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ICHD – 2R
Chronic Migraine
A. Headache ≥ 15 days/month for ≥ 3 months
B. Patient had ≥ 5 attacks fulfilling ICHD-2 Migraine with/without aura
C. On ≥ 8 days/month for ≥ 3 months headache fulfills criteria for migraine and/or obtains relief with triptan or ergot
D. No medication overuse and not attributed to another disorder
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Chronic Daily Headache
2.4% - 4.7% worldwide
1.3% - 2.4% chronic migraine
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Arruda M A et al. Neurology 2010;74:903-908
©2010 by Lippincott Williams & Wilkins
Chronic Headache in Preadolescent Children
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Persistent Myth
The difference between episodic migraine
and chronic migraine is purely because of
psychological influences.
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Psychiatric Co-morbidities
Episodic
Migraine
Chronic
Migraine
Depression 14% 28%
Anxiety 48% 66%
Smitherman T. Psychiatric Co-morbities and Migraine Chronification. Current Pain and Headache Reports 2009
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Psychiatric Co-Morbidities
in Adolescent
Chronic Daily Headache
21% Major Depression
19% Panic Disorder
20% Current High Suicide Risk
Most correlated to migraine with aura
Shuu-Jiun Wang, Kai-Dih Juang, Jong-Ling Fuh, and Shiang-Ru Lu. Psychiatric comorbidity and suicide risk in adolescents with chronic daily headache Neurology, May 2007; 68: 1468 - 1473.
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Psychiatric influences are not
specific to migraine
Bidirectional relationship to depression
and anxiety in other neurological
conditions as well
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Epilepsy and Depression
History of depression:
Four to Seven fold higher risk of developing epilepsy
Two fold less likely to be seizure-free with AED after 5 years
Seven fold less likely to be seizure-free after anterior temporal lobectomy for refractory epilepsy
9-22% individuals with epilepsy have depression
Kanner. Epilepsy Currents 2011
Harden. Neurology 2002
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Association between major depression and the development of medical
and neurological disorders.
Andres M. Kanner , Steven C. Schachter , John J. Barry , Dale C. Hersdorffer , Marco Mula , Michael Trimble , Bruc...
Depression and epilepsy: Epidemiologic and neurobiologic perspectives that may explain their high comorbid occurrence
Epilepsy & Behavior Volume 24, Issue 2 2012 156 - 168
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Perhaps not all chronic migraineurs are crazy after
all…but how did this myth become so pervasive?
No objective findings
Considered a benign condition
People in pain are unpleasant
Lack of education in neurology training
Excluded from most headache trials
Little research funding
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Impact of Chronic Migraine
5 days over past 3
months… Episodic Migraine Chronic Migraine
Missed work/school 2.2% 8.2%
Missed household
chores 24.3% 57.4%
Missed family activities 9.5% 36.9%
Bigal et al Chronic Migraine in the Population. Neurology 2008
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Powers, S. W. et al. Pediatrics 2003;112:e1-e5
Pediatric headache disability similar to disability scores in cancer and rheumatological diseases
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Remission of chronic migraine significantly decreases disability scores
Manack A et al. Neurology 2011;76:711-718
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American Migraine Prevalence and Prevention Study
(AMPP)
In 2004: US survey of 120,000 households
162, 576 responders : 30,721 reported at
least one severe headache in previous
year
Phase 2: 24,000 randomly selected for 5
year follow up study
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One year prognosis of migraine in
the population
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Natural History in Migraine
Bigal M E , Lipton R B Neurology 2008;71:848-855
©2008 by Lippincott Williams & Wilkins
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Neurovascular Theory
Cortical Spreading Depression
Reactive blood vessel changes
Increased plasma protein leakage
Subsequent activation of trigeminal nucleus
with central sensitization (allodynia)
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CSD Stimulates Trigeminal
Sensory Fibers
Trigeminal nerve fibers in the meningeal vessels
1
2 3
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Release of CGRP, substance P
& Inflammatory Cytokines
4
2 3 1
5 6
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Activation of Nociceptors
The inflammation and edema activate
peripheral meningeal nociceptors
Nociceptors transmit signals to the trigeminal ganglion and the TNC
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Central sensitization: sensitization of second-order neurons in the trigeminal nucleus
caudalis mediates cutaneous allodynia.
Aurora S K Neurology 2009;72:S8-S13
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Symptoms of Central
Sensitization
Burstein R et al. Ann Neurol. 2000;47:614-624.
Burstein R et al. Brain. 2000;123:1703-1709.
• Combing hair
• Pulling hair back (ponytail)
• Shaving
• Wearing eyeglasses
• Wearing contact lenses
• Wearing jewelry
• Wearing snug clothing
• Using a heavy blanket in
bed
• Allowing shower water to
hit the face (“it feels like
pins and needles”)
• Resting the face on the
pillow on the migraine
side
• Rubbing back of neck
• Cooking (“the heat is too
much”)
• Breathing through the
nose on cold days (“it
burns”)
Patients often avoid 1 or more of the following activities because of cutaneous allodynia
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Bigal M E , Lipton R B Neurology 2008;71:848-855
Cutaneous allodynia most
prevalent in chronic migraine
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Functional Imaging in Migraine vs Controls: Increased cortical thickness in migraine
DaSilva A F et al. Neurology 2007;69:1990-1995
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Maleki N et al. Cephalalgia 2012;32:607-620
Copyright © by International Headache Society
Structural and Functional Changes Evident in High
Frequency Migraine vs Low Frequency Migraine
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Cerebellar infarct-like lesions: the CAMERA study.
Kruit M C et al. Brain 2005;128:2068-2077
© The Author (2005). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For Permissions, please email: [email protected]
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Periaqueductal Gray Matter Dysfunction in Migraine:
Cause or the Burden of Illness?
Headache: The Journal of Head and Face Pain Volume 41, Issue 7, pages 629-637, 20 DEC 2001 DOI: 10.1046/j.1526-4610.2001.041007629.x
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Frequent Pain Aggregates in Families A. Mother with no headaches
D. Mother with CDH
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Risk factors
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Un-modifiable
Age (declines after 50)
White race
Low education/socioeconomic status
Head injury
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Modifiable Risk Factors
Attack Frequency
Medication overuse
Stressful life events
Caffeine Overuse
Obesity
Unhealthy lifestyle
Snoring
Other pain syndromes
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Attack Frequency
Risk of developing CM increasing in a
nonlinear manner with baseline headache
frequency
Elevated risk begins at 3 or more
headaches a month
Scher AI et al. Pain. 2003;16:81-89
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Headache frequency predicts progression to CDH Estimates were calculated using multinomial logistic regression (p < 0.005).
Aurora S K Neurology 2009;72:S8-S13
©2009 by Lippincott Williams & Wilkins
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Current theories on
Medication Overuse
Headache
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Not “rebound headaches”
Increase in headaches occur with
repeated exposure to certain abortive
medicines, not because of withdrawal.
Term “rebound” increases misguided
belief that long acting narcotics won’t
increase headaches.
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The abortive medicine used
matters Doubled risk of transformation to chronic
migraine at one year:
Barbiturate compounds 5 days/month
Opiates 8 days/month (risk higher in men)
Triptans 10 days/month
NSAIDS 14 days/month
Bigal ME. Lipton R. Overuse of Acute Migraine Medications and Migraine
Chronification. Current Pain and Headache Reports 2009
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Medication Overuse Risk factor or headache diagnosis?
Complete wean off overused abortives
does not always resolve headaches
Overuse of abortives does not always lead
to chronic migraines
Consider conceptualizing as risk factor for
lowering headache thresholds which may
increase headache frequency and
decrease response to preventative
treatments
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Frustrations in Treating
Chronic Headaches
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Pain Scale
Don’t debate.
Believe pain.
Chronic pain does not look like acute pain
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Frustration and Anger
“Why can’t anyone tell me why I have
headaches?”
“Why doesn’t anything work for me?”
“No one can help me.”
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Blame Congress!
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Disability Adjusted Life Years
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“Can’t you give me anything for the pain?”
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Request for immediate pain relief.
Focus on prevention – abortives will fail in
chronic migraine. (leading to frequent
phone calls)
Educate patient that opiates increase
production of CGRP which is implicated in
migraine
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“No, stress doesn’t affect my headaches at
all.”
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Befriend a pain
psychologist.