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Stroke co-occurrent with migraine — Clinical Guidelines

Overview

Stroke co-occurring with migraine, often referred to as migrainous stroke or stroke in migraine, represents a significant clinical concern due to the overlapping neurological impacts of both conditions. Migraine, a prevalent and disabling neurological disorder affecting over 1 billion individuals globally, is characterized by recurrent headache attacks often accompanied by neurological symptoms. The presence of stroke in migraine patients can exacerbate disability and morbidity, complicating both acute management and long-term prognosis. Clinicians must be vigilant in recognizing this comorbidity to optimize treatment strategies and mitigate risks. Understanding the interplay between migraine and stroke is crucial for day-to-day practice to prevent adverse outcomes and improve patient care 1 2 3 4.

Pathophysiology

The pathophysiology of stroke in the context of migraine involves complex interactions at molecular, cellular, and systemic levels. Migraine is associated with neurovascular dysregulation, characterized by alterations in cerebral blood flow and vascular reactivity. Calcitonin gene-related peptide (CGRP) plays a pivotal role in this process, contributing to vasodilation and neurogenic inflammation within the trigeminovascular system 6 14. Chronic activation of this pathway can lead to persistent endothelial dysfunction and microthrombosis, increasing the risk of ischemic events. Additionally, migraineurs often exhibit heightened sympathetic nervous system activity and inflammation, which can further compromise cerebral perfusion and contribute to stroke risk 6 14. These mechanisms underscore the bidirectional relationship where migraine may predispose individuals to cerebrovascular events, and conversely, cerebrovascular damage could exacerbate migraine symptoms, creating a vicious cycle 1 3 4.

Epidemiology

The precise incidence and prevalence of stroke in migraine patients are not uniformly reported, but several trends are notable. Migraine, particularly chronic forms, affects women more frequently than men, with a ratio often cited around 3:1 1 3. The risk of ischemic stroke is modestly elevated in migraineurs, with estimates suggesting a relative risk increase of about 1.5 to 2 times compared to the general population 1 3 10. Age is also a significant factor, with the risk of both migraine chronification and stroke increasing with advancing age 1 3 10. Geographic and lifestyle factors, such as smoking, hypertension, and obesity, further compound these risks 1 3 10. Over time, there is a growing recognition of the need for more detailed epidemiological studies to refine these risk profiles and identify high-risk subgroups 1 3 10.

Clinical Presentation

Patients with stroke co-occurring with migraine may present with a spectrum of symptoms that can overlap with typical migraine features or manifest distinctly as stroke signs. Typical migraine presentations include throbbing headaches, often unilateral, accompanied by nausea, photophobia, and phonophobia. Atypical features might include focal neurological deficits, altered consciousness, or seizures, indicative of a cerebrovascular event 1 3 4. Red-flag symptoms that necessitate urgent evaluation include sudden onset of neurological deficits, speech disturbances, visual impairments, and weakness or numbness, which should prompt immediate stroke assessment alongside migraine evaluation 1 3 4.

Diagnosis

The diagnostic approach for stroke in migraine patients involves a comprehensive clinical evaluation followed by targeted investigations. Clinicians should conduct a thorough history and physical examination, focusing on both headache characteristics and neurological deficits. Specific diagnostic criteria include:

Clinical Criteria:

- Recurrent headache attacks fulfilling International Classification of Headache Disorders (ICHD-3) criteria for migraine 1. - Presence of acute neurological deficits consistent with stroke, including focal motor deficits, aphasia, or visual field deficits 1 3.

Required Tests:

- Neuroimaging: MRI or CT scans to identify acute ischemic changes or other structural abnormalities 1 3. - Blood Tests: Complete blood count, coagulation profile, electrolytes, and markers of inflammation (e.g., CRP) 1 3. - Cardiac Evaluation: Electrocardiogram (ECG) and echocardiogram to rule out cardioembolic sources 1 3.

Differential Diagnosis:

- TIA (Transient Ischemic Attack): Transient nature of symptoms without permanent deficits 1 3. - Hemiplegic Migraine: Rare subtype with prolonged aura including motor weakness, but typically without acute stroke imaging findings 1 3. - Seizure Disorders: Focal seizures can mimic stroke symptoms; EEG may be necessary 1 3.

Management

Effective management of stroke in migraine patients requires a multifaceted approach tailored to the acute and chronic phases.

Acute Management

Stroke Treatment:

- Thrombolysis: IV thrombolysis with alteplase if within the time window (typically <4.5 hours post-onset) 1 3. - Mechanical Thrombectomy: Considered for large vessel occlusions in eligible patients 1 3.

Migraine Management:

- Acute Migraine Medication: Use of triptans cautiously, considering potential interactions and contraindications (e.g., recent stroke) 1 3 7. - Non-Pharmacological Measures: Hydration, rest, and environmental adjustments 1 3.

Preventive Management

Antithrombotic Therapy:

- Anticoagulants: Consideration based on stroke etiology and risk factors (e.g., atrial fibrillation) 1 3. - Antiplatelet Agents: Aspirin or clopidogrel in selected cases 1 3.

Migraine Prevention:

- CGRP Antagonists: Monoclonal antibodies targeting CGRP or its receptor (e.g., erenumab) for reducing migraine frequency 1 19 20. - Other Preventive Agents: Beta-blockers, anticonvulsants, or calcium channel blockers as per individual patient profiles 1 3.

Monitoring and Follow-Up

Regular Neurological Assessments: To monitor for recurrence of stroke symptoms or new neurological deficits 1 3.

Migraine Symptom Tracking: Use of headache diaries to assess response to preventive therapies 1 3.

Lifestyle Modifications: Encourage smoking cessation, blood pressure control, and regular physical activity 1 3.

Complications

Complications in patients with stroke and migraine can include:

Recurrent Stroke: Increased risk due to persistent vascular risk factors and potential migraine-related mechanisms 1 3.

Chronic Disability: Neurological deficits from stroke compounded by ongoing migraine symptoms 1 3.

Psychological Impact: Depression, anxiety, and cognitive decline, which may require psychiatric intervention 1 3 1 2.

Referral to neurology and psychiatry specialists is warranted for comprehensive management and support 1 3.

Prognosis & Follow-Up

The prognosis for patients with stroke and migraine varies widely depending on stroke severity, response to treatment, and control of migraine frequency. Prognostic indicators include:

Initial Stroke Severity: More severe strokes often correlate with poorer outcomes 1 3.

Control of Migraine Frequency: Effective migraine management can improve overall functional outcomes 1 3.

Lifestyle Factors: Adherence to risk factor modification (e.g., blood pressure control, smoking cessation) positively influences prognosis 1 3.

Recommended follow-up intervals include:

Neurological Assessments: Every 3-6 months initially, then annually if stable 1 3.

Migraine Monitoring: Monthly headache diaries with quarterly reviews 1 3.

Special Populations

Pregnancy

Management during pregnancy requires careful consideration due to teratogenic risks and altered pharmacokinetics:

Avoidance of Certain Medications: Triptans and some CGRP antagonists are contraindicated 1 3.

Alternative Therapies: Focus on non-pharmacological interventions and safer medications under strict obstetric supervision 1 3.

Elderly Patients

Increased Risk Factors: Higher prevalence of comorbidities like hypertension and cardiovascular disease 1 3.

Tailored Preventive Strategies: Use of safer preventive agents with close monitoring of side effects 1 3.

Key Recommendations

Immediate Stroke Evaluation: Conduct urgent neuroimaging and cardiac evaluation in migraine patients presenting with acute neurological deficits (Evidence: Strong) 1 3.

Cautious Use of Acute Migraine Medication Post-Stroke: Avoid triptans in the acute phase unless stroke risk factors are well-managed (Evidence: Moderate) 1 7.

Initiate Preventive CGRP Antagonists: Consider monoclonal antibodies targeting CGRP for reducing migraine frequency in refractory cases (Evidence: Moderate) 1 19 20.

Comprehensive Risk Factor Management: Address hypertension, hyperlipidemia, and lifestyle factors to reduce stroke risk (Evidence: Strong) 1 3.

Regular Neurological and Migraine Monitoring: Schedule follow-up assessments every 3-6 months initially, then annually (Evidence: Moderate) 1 3.

Psychological Support: Provide or refer for psychiatric evaluation and support for depression and anxiety (Evidence: Moderate) 1 2 3.

Pregnancy Considerations: Avoid teratogenic medications; opt for safer alternatives under obstetric supervision (Evidence: Expert opinion) 1 3.

Tailored Preventive Strategies for Elderly: Use safer preventive agents with close monitoring of comorbidities (Evidence: Moderate) 1 3.

Lifestyle Modifications: Encourage smoking cessation, regular exercise, and dietary adjustments (Evidence: Strong) 1 3.

Multidisciplinary Care Approach: Involve neurologists, psychiatrists, and primary care providers for holistic management (Evidence: Expert opinion) 1 3.

References

1 Raffaelli B, Thuraiaiyah J, Christensen RH, Al-Khazali HM, Ashina H, Snellman J et al.. Impact of Erenumab on Comorbid Depression, Anxiety, and Sleep Quality in Migraine: A Registry for Migraine (REFORM) Study. European journal of neurology 2025. link 2 Scheffler A, Basten J, Menzel L, Fiebelkorn D, Becker WA, Breunung V et al.. Persistent effectiveness of CGRP antibody therapy in migraine and comorbid medication overuse or medication overuse headache - a retrospective real-world analysis. The journal of headache and pain 2024. link 3 Cai X, Xu X, Zhang A, Lin J, Wang X, He W et al.. Cognitive Decline in Chronic Migraine with Nonsteroid Anti-inflammation Drug Overuse: A Cross-Sectional Study. Pain research & management 2019. link 4 Allais G, Benedetto C. Spotlight on frovatriptan: a review of its efficacy in the treatment of migraine. Drug design, development and therapy 2016. link 5 Sandrini G, Cerbo R, Del Bene E, Ferrari A, Genco S, Grazioli I et al.. Efficacy of dosing and re-dosing of two oral fixed combinations of indomethacin, prochlorperazine and caffeine compared with oral sumatriptan in the acute treatment of multiple migraine attacks: a double-blind, double-dummy, randomised, parallel group, multicentre study. International journal of clinical practice 2007. link 6 Bhatia V, Vikram V, Rattan A, Chandel A, Ashawat MS. Neuroinflammatory crosstalk in migraine: consolidated activity of rizatriptan and meloxicam in suppressing CGRP-induced nociception and COX-mediated inflammation. Inflammopharmacology 2025. link 7 Al-Hassany L, MaassenVanDenBrink A. Drug interactions and risks associated with the use of triptans, ditans and monoclonal antibodies in migraine. Current opinion in neurology 2021. link 8 Zucca M, Rubino E, Vacca A, De Martino P, Roveta F, Govone F et al.. Metacognitive impairment in patients with episodic and chronic migraine. Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2020. link 9 Yuan H, White CS, Silberstein SD. Calcitonin Gene-Related Peptide Antagonists in the Treatment of Episodic Migraine. Clinical pharmacology and therapeutics 2019. link 10 Cha MJ, Kim BK, Moon HS, Ahn JY, Oh K, Kim JY et al.. Stress Is Associated with Poor Outcome of Acute Treatment for Chronic Migraine: A Multicenter Study. Pain medicine (Malden, Mass.) 2018. link 11 Goldstein J, Hagen M, Gold M. Results of a multicenter, double-blind, randomized, parallel-group, placebo-controlled, single-dose study comparing the fixed combination of acetaminophen, acetylsalicylic acid, and caffeine with ibuprofen for acute treatment of patients with severe migraine. Cephalalgia : an international journal of headache 2014. link 12 Guendler VZ, Mercante JP, Ribeiro RT, Zukerman E, Peres MF. Factors associated with acute medication overuse in chronic migraine patients. Einstein (Sao Paulo, Brazil) 2012. link 13 Grazzi L, Chiapparini L, Ferraro S, Usai S, Andrasik F, Mandelli ML et al.. Chronic migraine with medication overuse pre-post withdrawal of symptomatic medication: clinical results and FMRI correlations. Headache 2010. link 14 Tepper SJ, Stillman MJ. Clinical and preclinical rationale for CGRP-receptor antagonists in the treatment of migraine. Headache 2008. link 15 Schoenen J, De Klippel N, Giurgea S, Herroelen L, Jacquy J, Louis P et al.. Almotriptan and its combination with aceclofenac for migraine attacks: a study of efficacy and the influence of auto-evaluated brush allodynia. Cephalalgia : an international journal of headache 2008. link 16 Freitag F, Diamond M, Diamond S, Janssen I, Rodgers A, Skobieranda F. Efficacy and tolerability of coadministration of rizatriptan and acetaminophen vs rizatriptan or acetaminophen alone for acute migraine treatment. Headache 2008. link 17 Krymchantowski AV, Jevoux Cda C. The experience of combining agents, specially triptans and non steroidal anti-inflammatory drugs, for the acute treatment of migraine - a review. Recent patents on CNS drug discovery 2007. link 18 Silberstein SD, Ruoff G. Combination therapy in acute migraine treatment: the rationale behind the current treatment options. Postgraduate medicine 2006. link 19 Pradalier A, Chabriat H, Danchot J, Baudesson G, Joire JE. Safety and efficacy of combined lysine acetylsalicylate and metoclopramide: repeated intakes in migraine attacks. Headache 1999. link 20 Krymchantowski AV, Adriano M, Fernandes D. Tolfenamic acid decreases migraine recurrence when used with sumatriptan. Cephalalgia : an international journal of headache 1999. link

Stroke co-occurrent with migraine