Migraine: Understanding Triggers and Treatment

Migraine affects approximately 10 million people in the United Kingdom, making it the third most common disease worldwide and a leading cause of disability, according to The Migraine Trust. This neurological condition impacts 1 in 7 people globally, with women three times more likely to suffer from migraines than men. The World Health Organization ranks migraine as the sixth highest cause of years lost due to disability, highlighting the significant impact this condition has on individuals’ quality of life and productivity.

Understanding Migraine: More Than Just a Headache

Migraine is a complex neurological disorder characterised by recurrent episodes of moderate to severe headache, often accompanied by additional symptoms such as nausea, vomiting, and sensitivity to light and sound. The NHS emphasises that migraine is not simply a bad headache but a distinct medical condition requiring appropriate diagnosis and management.

Migraine Phases:

Prodrome (Pre-headache):
Occurs hours to days before the headache:

• Mood changes (irritability, depression, euphoria)
• Food cravings or loss of appetite
• Increased urination
• Neck stiffness
• Yawning
• Difficulty concentrating

Aura (if present):
Affects approximately 25% of migraine sufferers:

• Visual disturbances (flashing lights, zigzag patterns, blind spots)
• Sensory symptoms (tingling, numbness in face or hands)
• Speech difficulties
• Motor symptoms (weakness, coordination problems)
• Typically lasts 20-60 minutes

Headache Phase:
The main attack lasting 4-72 hours:

• Moderate to severe pain intensity
• Usually unilateral (one-sided)
• Pulsating or throbbing quality
• Worsens with physical activity
• Accompanied by nausea, vomiting, photophobia, phonophobia

Postdrome (Recovery):
The “migraine hangover” lasting hours to days:

• Fatigue and weakness
• Difficulty concentrating
• Mood changes
• Neck stiffness
• Sensitivity to light and sound may persist

Types of Migraine:

Migraine Without Aura:
Most common type affecting 70-75% of migraine sufferers:

• Headache with associated symptoms but no aura
• Diagnosis based on headache characteristics and accompanying symptoms
• May have prodromal symptoms

Migraine With Aura:
Affects 25-30% of migraine sufferers:

• Headache preceded by neurological symptoms
• Aura symptoms fully reversible
• May occasionally occur without headache (silent migraine)

Chronic Migraine:
Defined as 15 or more headache days per month for more than 3 months:

• At least 8 days must meet migraine criteria
• Often develops from episodic migraine
• Significantly impacts quality of life
• May result from medication overuse

Menstrual Migraine:
Linked to hormonal fluctuations:

• Pure menstrual migraine: Occurs only around menstruation
• Menstrually-related migraine: More frequent around menstruation but occurs at other times
• Often more severe and longer-lasting than non-menstrual attacks

Migraine Triggers: Identifying Personal Patterns

Understanding and identifying personal migraine triggers is crucial for effective management. The International Headache Society recognises that triggers are highly individual and may vary between episodes.

Common Migraine Triggers:

Dietary Triggers:

• Aged cheeses: Contain tyramine, a known trigger
• Processed meats: Nitrates and nitrites in bacon, hot dogs, deli meats
• Alcohol: Particularly red wine, beer, and champagne
• Artificial sweeteners: Aspartame and sucralose
• MSG (Monosodium Glutamate): Common in Asian cuisine and processed foods
• Chocolate: Contains phenylethylamine and caffeine
• Citrus fruits: May trigger migraines in sensitive individuals

Lifestyle Triggers:

• Sleep disturbances: Too little or too much sleep
• Irregular meal patterns: Skipping meals or prolonged fasting
• Dehydration: Even mild dehydration can trigger attacks
• Excessive caffeine: Or sudden caffeine withdrawal
• Intense physical exertion: Particularly without proper conditioning
• Weather changes: Barometric pressure changes, humidity

Hormonal Triggers:

• Menstrual cycle: Oestrogen fluctuations before and during menstruation
• Oral contraceptives: Hormonal birth control pills
• Hormone replacement therapy: Particularly during hormone changes
• Pregnancy: Usually improves during pregnancy but may worsen initially

Environmental Triggers:

• Bright lights: Fluorescent lighting, computer screens, sunlight
• Strong odours: Perfumes, cleaning products, smoke
• Loud noises: Sudden or prolonged loud sounds
• Weather patterns: Changes in barometric pressure, temperature, humidity

Emotional and Psychological Triggers:

• Stress: Both acute stress and stress relief (weekend migraines)
• Anxiety and depression: Often coexist with migraine
• Major life changes: Both positive and negative events
• Anticipatory anxiety: Worrying about potential triggers

Medication-Related Triggers:

• Medication overuse: Particularly pain relievers and triptans
• Vasodilating medications: Nitrates, some blood pressure medications
• Hormone medications: As mentioned above
• Sudden medication discontinuation: Particularly preventive medications

Trigger Management Strategies:

Keeping a Migraine Diary:
The Migraine Trust recommends detailed tracking:

• Date and time of headache onset
• Duration and severity
• Associated symptoms
• Potential triggers in the 24-48 hours before
• Medications taken and effectiveness
• Menstrual cycle information for women
• Sleep patterns and stress levels

Identifying Patterns:

• Look for consistent triggers across multiple episodes
• Consider combinations of triggers rather than single causes
• Note timing relationships between triggers and attacks
• Consider seasonal or cyclical patterns
• Use smartphone apps or online tools for easier tracking

Diagnosis and Medical Evaluation

Migraine diagnosis is primarily clinical, based on symptom patterns and medical history. The International Classification of Headache Disorders provides standardised diagnostic criteria used worldwide.

Diagnostic Criteria for Migraine Without Aura:

A. At least 5 attacks fulfilling criteria B-D
B. Headache attacks lasting 4-72 hours (untreated or unsuccessfully treated)
C. Headache has at least two of the following characteristics:

• Unilateral location
• Pulsating quality
• Moderate or severe pain intensity
• Aggravation by or causing avoidance of routine physical activity

D. During headache at least one of the following:

• Nausea and/or vomiting
• Photophobia and phonophobia

E. Not better accounted for by another headache disorder

Medical History and Examination:

Headache History:

• Age of onset and headache evolution
• Frequency, duration, and severity of attacks
• Location and quality of pain
• Associated symptoms
• Trigger identification
• Family history of headache
• Previous treatments tried

Physical Examination:

• General physical examination
• Neurological examination
• Blood pressure measurement
• Fundoscopic examination (eye examination)
• Neck and temporal artery palpation

Red Flag Symptoms:
Indicating need for urgent investigation:

• Sudden onset: “Thunderclap” headache reaching maximum intensity within minutes
• New headache: In people over 50 without previous headache history
• Headache with fever: Particularly with neck stiffness
• Neurological symptoms: New weakness, confusion, vision loss
• Progressive headache: Worsening over days to weeks
• Positional headache: Worse when lying down or standing up

Investigations:

Most migraine diagnoses don’t require testing, but investigations may be needed when:

Neuroimaging (MRI/CT):

• Atypical headache features
• New neurological symptoms
• Sudden onset or significant change in headache pattern
• Headache with fever and neck stiffness

Blood Tests:

• May be performed to exclude secondary causes
• Thyroid function tests
• Inflammatory markers
• Not routinely required for typical migraine

Treatment Approaches: Acute and Preventive

Migraine treatment involves both acute management of individual attacks and preventive strategies to reduce frequency and severity. The British Association for the Study of Headache provides evidence-based treatment guidelines.

Acute Treatment:

Over-the-Counter Medications:

Simple Analgesics:

• Paracetamol: 1000mg at onset of headache
• Aspirin: 900-1000mg, particularly effective for migraine
• Ibuprofen: 400-600mg, anti-inflammatory properties helpful
• Combination medications: Paracetamol, aspirin, and caffeine combinations

Effectiveness Tips:

• Take medication early in the attack
• Use adequate doses as recommended
• Don’t exceed maximum daily doses
• Consider soluble formulations for faster absorption

Prescription Acute Treatments:

Triptans:
Specific migraine medications that are highly effective:

• Sumatriptan: Most studied, available as tablets, nasal spray, injection
• Rizatriptan: Fast-acting, available as standard and dissolving tablets
• Zolmitriptan: Available as tablets, nasal spray, dissolving tablets
• Eletriptan: Longer-lasting action
• Naratriptan: Fewer side effects but slower onset

How Triptans Work:

• Target serotonin receptors specific to migraine pathways
• Constrict dilated blood vessels
• Block pain transmission
• Most effective when taken early in attack

Contraindications:

• Cardiovascular disease
• Uncontrolled hypertension
• Previous stroke or TIA
• Pregnancy and breastfeeding
• Basilar or hemiplegic migraine

Anti-nausea Medications:
Often needed alongside pain relief:

• Metoclopramide: Also improves absorption of oral medications
• Domperidone: Alternative with fewer side effects
• Prochlorperazine: Available as tablets or suppositories
• Cyclizine: Particularly useful for vomiting

Preventive Treatment:

Considered when migraines significantly impact quality of life or occur frequently.

Indications for Preventive Treatment:

• 4 or more migraine attacks per month
• Attacks lasting more than 12 hours
• Significant disability despite acute treatment
• Contraindication to acute medications
• Patient preference
• Medication overuse headache risk

First-Line Preventive Medications:

Beta-Blockers:

• Propranolol: 40-240mg daily, most evidence for migraine prevention
• Metoprolol: Alternative if propranolol not tolerated
• Atenolol: Less evidence but sometimes used
• Contraindicated in asthma, diabetes, heart block

Anticonvulsants:

• Topiramate: 50-200mg daily, also causes weight loss
• Sodium valproate: Effective but teratogenic (avoid in women of childbearing age)
• Gabapentin: Less evidence but sometimes helpful

Antidepressants:

• Amitriptyline: 10-150mg daily, also helps with sleep and mood
• Nortriptyline: Alternative tricyclic with fewer side effects
• Venlafaxine: SNRI alternative for those unable to tolerate tricyclics

Calcium Channel Blockers:

• Flunarizine: Not available in UK but used elsewhere
• Verapamil: May be helpful, particularly for cluster headache

CGRP Antagonists:
Newer, migraine-specific preventive medications:

• Erenumab: Monthly injection targeting CGRP receptor
• Fremanezumab: Monthly or quarterly injection
• Galcanezumab: Monthly injection
• Eptinezumab: Quarterly infusion
• Expensive but very effective for some patients

Non-Pharmacological Treatments:

Lifestyle Modifications:

• Regular sleep schedule (7-9 hours nightly)
• Regular meal times and adequate hydration
• Regular moderate exercise
• Stress management techniques
• Trigger avoidance strategies

Behavioural Therapies:

Cognitive Behavioural Therapy (CBT):

• Helps manage pain and disability
• Addresses anxiety and depression often associated with migraine
• Teaches coping strategies
• Can be combined with medication

Relaxation Techniques:

• Progressive muscle relaxation
• Deep breathing exercises
• Mindfulness meditation
• Biofeedback training

Physical Therapies:

Physiotherapy:

• Neck and shoulder muscle tension often contributes to migraine
• Posture correction
• Specific exercises for headache relief
• Manual therapy techniques

Acupuncture:

• Good evidence for migraine prevention
• May be as effective as preventive medications
• Generally safe when performed by qualified practitioners
• Consider for patients preferring non-drug approaches

Special Situations and Populations

Migraine in Women:

Menstrual Migraine:

• Often more severe and longer-lasting
• May be prevented with short courses of triptans or NSAIDs around menstruation
• Continuous combined oral contraceptives may help
• Hormone replacement therapy requires careful consideration

Pregnancy and Migraine:

• Migraines often improve during pregnancy, especially second and third trimesters
• Most migraine medications contraindicated in pregnancy
• Paracetamol generally safe
• Non-drug treatments preferred
• Preeclampsia must be excluded if headaches worsen

Menopause:

• Migraine patterns often change
• May improve with stable low oestrogen levels
• Hormone replacement therapy effects variable
• Some women experience worsening initially

Migraine in Children and Adolescents:

Childhood Migraine Features:

• Often shorter duration (1-48 hours)
• More commonly bilateral
• Associated symptoms may be prominent
• May present as recurrent abdominal pain or vomiting

Treatment Considerations:

• Lifestyle measures particularly important
• Limited medication options approved for children
• Avoid overuse of pain medications
• School accommodation may be needed

Migraine in Older Adults:

Late-Onset Migraine:

• New migraine after age 50 requires careful evaluation
• Rule out secondary causes
• May be related to medication or medical conditions
• Visual aura without headache more common

Chronic Migraine:

Definition and Impact:

• 15 or more headache days per month
• Often results from episodic migraine transformation
• Medication overuse headache common contributing factor
• Significant disability and quality of life impact

Management:

• Address medication overuse if present
• Preventive medication essential
• CGRP antagonists particularly effective
• Botulinum toxin injections for chronic migraine
• Comprehensive multidisciplinary approach needed

Medication Overuse Headache

A common complication of frequent pain medication use, affecting up to 1-2% of the population.

Risk Factors:

• Frequent use of acute headache medications
• Underlying primary headache disorder
• Psychological factors and stress
• Genetic predisposition

Medications Most Commonly Involved:

• Combination analgesics (particularly those containing caffeine)
• Triptans
• Opioids
• Simple analgesics when used very frequently

Treatment:

• Gradual withdrawal of overused medication
• Introduction or optimisation of preventive treatment
• Management of withdrawal symptoms
• Patient education and support
• Long-term follow-up to prevent relapse

Emergency Situations and When to Seek Help

Emergency Medical Care Required:

Status Migrainosus:

• Migraine lasting more than 72 hours
• May require intravenous treatment
• Risk of dehydration and medication complications
• Hospital assessment and treatment needed

Severe Migraine with Complications:

• Signs of stroke or neurological emergency
• Severe headache with fever and neck stiffness
• New severe headache in pregnancy (especially >20 weeks)
• Headache with severe hypertension

Regular Medical Review Needed:

• Increasing frequency or severity of attacks
• New or different headache features
• Poor response to usual treatments
• Concerns about medication overuse
• Impact on work, school, or quality of life
• Need for preventive treatment consideration

Living Well with Migraine

Self-Management Strategies:

Developing a Migraine Action Plan:

• Recognize early warning signs
• Have acute medications readily available
• Know when to rest and when to seek help
• Plan for work/school absences
• Communicate needs to family and friends

Workplace and School Accommodations:

• Lighting modifications (avoiding fluorescent lights)
• Flexible working hours or working from home options
• Quiet workspace arrangements
• Access to dark, quiet room for rest
• Understanding from colleagues and supervisors

Travel Considerations:

• Maintain regular sleep and meal schedules
• Stay hydrated during travel
• Pack adequate medications
• Consider time zone effects
• Plan for altitude changes

Support Resources:

Patient Organizations:

• The Migraine Trust: 0808 802 0066
• Migraine Action: Patient support and information
• National Migraine Centre: Specialist clinic and information
• Cluster Headaches: Support for cluster headache sufferers

Online Resources:

• NHS migraine information and self-help tools
• Migraine tracking apps for smartphones
• Online support communities and forums
• Educational webinars and resources

Healthcare Providers:

• General Practitioners: Initial assessment and treatment
• Neurologists: Specialist care for complex cases
• Headache Specialists: Subspecialty expertise
• Pain Clinics: Multidisciplinary approach for chronic cases

The Future of Migraine Treatment

Emerging Treatments:

New CGRP Therapies:

• Oral CGRP receptor antagonists (gepants)
• Additional injectable preventive options
• Intranasal CGRP treatments
• Personalised CGRP therapy approaches

Neuromodulation:

• Transcutaneous electrical nerve stimulation (TENS) devices
• Vagal nerve stimulation
• Transcranial magnetic stimulation
• Implantable stimulation devices for refractory cases

Precision Medicine:

• Genetic testing to guide treatment selection
• Biomarkers for treatment response prediction
• Personalised trigger identification
• Customised preventive approaches

Research Directions:

Understanding Migraine Mechanisms:

• Brain imaging advances
• Genetic studies and discoveries
• Hormonal and metabolic factors
• Environmental and lifestyle interactions

New Drug Targets:

• Beyond CGRP pathways
• Neuroinflammation modulation
• Neurotransmitter system targeting
• Combination therapy approaches

Conclusion

Migraine represents a complex neurological condition that significantly impacts millions of people worldwide. However, with proper understanding of triggers, appropriate medical treatment, and comprehensive self-management strategies, most people with migraine can achieve significant improvement in their quality of life.

The key to successful migraine management lies in early recognition, trigger identification, appropriate acute treatment, and preventive strategies when needed. Modern treatments, including specific migraine medications and newer preventive options, provide unprecedented opportunities for reducing migraine frequency and severity.

Resources from organisations like The Migraine Trust, the NHS, and specialist headache clinics provide valuable information and support for individuals living with migraine.

Remember that migraine affects everyone differently, and treatment approaches should be individualised. Working closely with healthcare professionals to develop personalised management plans and accessing appropriate support services ensures the best possible outcomes for this challenging but treatable neurological condition.