Migraine Headache

Aka: Migraine Headache, Migraine, Classic Migraine, Migraine with Aura, Common Migraine, Migraine without Aura, Chronic Migraine Without Aura, Migraine Headache Diagnostic Criteria

1. See Also
   1. Headache
   2. Acute Recurrent Headache
2. Epidemiology
   1. Gender
      1. Females more commonly affected
   2. Prevalence
      1. New data suggests as high as 25% of U.S. population
      2. Children
         1. Age 3 to 7 years: 1.2 to 3.2%
         2. Age 7 to 11 years: 4 to 11%
            1. Boys: 7 years old mean age of onset
            2. Girls: 12 years old mean age of onset
         3. Age 15 years: 8 to 23%
      3. Adults
         1. Women: 18%
         2. Men: 6%
   3. Most Migraine Headaches are undiagnosed
      1. Women: 59% are undiagnosed
      2. Men: 71% are undiagnosed
      3. Migraine Headaches account for 95% of presentations
         1. Increases to 99% if patients say they have Migraine
   4. Chronic Migraine may evolve from other Headache types
      1. Chronic Tension Headache
      2. Post-Traumatic Headache
3. Risk Factors
   1. Family History of Migraine Headaches
   2. Obesity
   3. Analgesic overuse
   4. Sleep Apnea or other sleep disturbance
   5. Head Injury
   6. Female gender
   7. Caffeine: >100 mg/day (OR: 2.9)
      1. Bigal (2002) Headache 42:575-81
4. Pathophysiology: Trigeminovascular activation
   1. CNS Platelet and mast cell aggregation
   2. Serotonin release from synaptic nerve endings
   3. Increase then decrease in blood brain Catecholamines
      1. Norepinephrine
      2. Epinephrine
   4. Alternating Vasoconstriction and Vasodilatation
      1. The vessel wall Stretching results in pain
   5. Replaces the prior theory of spasm
      1. Vessel Spasm
      2. Rebound vasodilation
5. Types
   1. Common Migraine
      1. Migraine without Aura
   2. Classic Migraine
      1. Migraine with Aura
   3. Complicated Migraine
      1. Migraine with prominent neurologic Signs
   4. Basilar Migraine
   5. Hemiplegic Migraine
   6. Ophthalmoplegic Migraine
   7. Menstrual Migraine
   8. Migrainous Carotidynia
6. Symptoms
   1. Timing
      1. Episodic Headache
      2. Occurs 1-2 times per month
   2. Prodrome (30% of patients)
      1. Precedes Headache by up to 24 hours
      2. Excitability and Irritability
      3. Increased appetite and cravings (especially sweets)
      4. Depression
      5. Sleepiness and Fatigue
      6. Yawning
      7. Heightened perception to external stimuli
   3. Severity
      1. Disability is the marker of Migraine
   4. Aura (20% of patients): See diagnosis below
      1. Visual aura
         1. Scotomata (visual scintillations)
         2. Transient, fully reversible, colorful flashing lights or dark spots
      2. Atypical aura (carefully consider differential diagnosis such as Cerebrovascular Accident)
         1. Hemisensory aura
         2. Hemiparesis aura
         3. Dysphasia aura
   5. Headache Phase
      1. Location
         1. Unilateral in 50%
         2. Often frontal in location
      2. Characteristics
         1. Pulsating, Throbbing Headache in 50%
         2. Dull, ache-type Headache in 50%
      3. Palliative measures
         1. Relieved with sleep
      4. Timing
         1. Persists for 4 to 72 hours
         2. Consider alternative diagnosis if lasts longer than 72 hours
            1. Rarely, Status Migrainosus can last longer than 72 hours
      5. Severity
         1. Disabling symptoms
      6. Associated Symptoms strongly correlated with Migraine Headache
         1. Nausea or Vomiting
            1. Positive Predictive Value: 56% (m) 82% (f)
            2. Negative Predictive Value: 1.2% (m) 4.2% (f)
         2. Photophobia or Phonophobia
            1. Positive Predictive Value: 25% (m) 53% (f)
            2. Negative Predictive Value: 2.4% (m) 7.7% (f)
7. Symptoms: Common Triggers (Patient should keep a diary)
   1. See Migraine Headache Triggers
   2. See Tyramine-Vasoactive Amines
   3. See Medication Causes of Headache
8. Imaging: Neuroimaging Indications
   1. First or worst severe Migraine Headache (see below)
   2. New onset Migraine Headache in age over 50-55 years old
   3. Sudden onset Headache
   4. Abnormal Neurologic Examination
   5. Not indicated in nonacute Migraine with normal exam
   6. Neff (2005) Am Fam Physician 71(6):1219-22
9. Diagnosis: POUND mnemonic
   1. Migraine Headache is 92% likely if at least 4 of the following criteria are present
   2. Criteria
      1. Pulsatile quality of Headache
         1. Could also represent photophobia (but not part of mnemonic)
      2. One day duration
      3. Unilateral Location
      4. Nausea or Vomiting
      5. Disabling intensity
   3. References
      1. Ebell (2006) Am Fam Physician 74(12): 2087-88
10. Diagnosis: Migraine without Aura
    1. Timing and general characteristics
       1. Five episodes or more
       2. Each episode lasts 4 to 72 hours
       3. No evidence of Organic Headache
    2. Two of the following criteria
       1. Unilateral Headache pain
       2. Pulsating quality to Headache pain
       3. Symptom severity limits daily activities (moderate to severe intensity)
       4. Provoked by routine level of exertion (e.g. walking or climbing stairs)
    3. One of the following criteria
       1. Nausea
       2. Photophobia and Phonophobia
11. Diagnosis: Migraine with Aura
    1. Two or more attacks
    2. Headache associated with Migraine aura
       1. No motor weakness
       2. Visual aura (fully reversible)
          1. Scintillating scotoma or fortification spectra
             1. Flickering lights, spots or lines in the central visual field
          2. Photopsia
             1. Flashes of light
       3. Sensory aura (fully reversible)
          1. Paresthesia
          2. Numbness
          3. Speech disturbance (Aphasia or dysphasia)
    3. Three or more of the following characteristics
       1. One or more completely reversible aura symptoms
       2. At least one aura develops over 5 or more minutes
       3. Aura duration 60 minutes or less
       4. Headache follows aura within 60 minutes
12. Diagnosis: Migraine in Children
    1. Five or more Headaches that last 1-72 hours
    2. Includes at least two Migraine characteristics
       1. Bilateral or unilateral temporal/frontal Headache
       2. Throbbing or pulsating quality
       3. Intensity moderate to severe
       4. Worse with routine exertion
    3. Includes at least one associated symptom
       1. Nausea or Vomiting
       2. Photophobia or Phonophobia
    4. Precautions
       1. Occipital Headache may occur with increased intrcranial pressure and warrants additional evaluation
13. Differential Diagnosis
    1. See Headache Evaluation
    2. See Organic Headache
    3. Analgesic Rebound Headache
       1. Always consider for patients with frequent Headache
    4. Conditions that may coexist with Migraine Headache
       1. Myofascial cervical Neck Pain
          1. Not exclusive to Tension Headache
          2. Present in 75% of Migraine Headache patients
          3. Triptan medications relieve Neck Pain and Headache
          4. Kaniecki (2002) Neurology 58:S15-20
       2. Sinus Headache
          1. Migraine Headache criteria in 90% of Sinus Headache
          2. Schreiber (2004) Arch Intern Med 164:1769-72
14. Evaluation: Headache with persistent neurologic deficit
    1. See Organic Headache
    2. Exclude Ischemic causes
    3. Exclude structural causes
    4. Exclude Inflammatory causes
    5. Exclude Metabolic cause
15. Evaluation: First or Worst severe Migraine Headache
    1. See Organic Headache
    2. No potent Narcotics until full evaluation
    3. Complete clinical and neurologic evaluation
    4. CT Head
       1. Not indicated in typical Migraine Headache
       2. Use low threshold for Organic Headache symptoms
          1. Neurologic changes
          2. New onset Headache
       3. Organic causes of Headache identified by CT Head
          1. Subarachnoid Hemorrhage
          2. Intracranial mass
    5. Lumbar Puncture
       1. Consider for meningeal signs, fever or ill appearance
16. Management
    1. See Migraine Management
    2. See Migraine Management in Children
17. Course
    1. Mild episodic Headaches
       1. Most cases start with Migraine without Aura
       2. Relieved with OTC medications
    2. Chronic episodic Migraine Headaches
       1. Unresponsive to OTC medications
       2. Often presents at this stage
    3. Chronic progressive Migraine Headaches
    4. Chronic-Refractory Migraine Headaches
18. Complications
    1. Migraine with Aura is associated with a two fold increase in Cerebrovascular Accident
       1. Etminan (2005) BMJ
       2. Schurks (2009) BMJ
       3. Spector (2010) Am J Med
19. References
    1. Jackson (1998) CMEA Internal Medicine Lecture,San Diego
    2. Gilmore (2011) Am Fam Physician 83(3): 271-80
    3. Hainer (2013) Am Fam Physician 87(10): 682-7
    4. Moore (1997) Am Fam Physician 56(8):2039-48
    5. Noble (1997) Am Fam Physician 56(9):2279-86
    6. Polizzotto (2002) J Fam Pract 51(2):161-7
    7. Winner (1997) Headache 37:545-8