Migraine Management: Acute and Preventive Treatment
Acute Treatment Algorithm
For mild to moderate migraine, start with NSAIDs (ibuprofen 400-800 mg, naproxen 500-825 mg, or aspirin 1000 mg) as first-line therapy; for moderate to severe migraine, immediately use combination therapy with a triptan (sumatriptan 50-100 mg) plus an NSAID (naproxen 500 mg), taken as early as possible when headache begins. 1, 2
First-Line Options by Attack Severity
Mild Migraine:
- NSAIDs alone: ibuprofen 400-800 mg, naproxen 500-825 mg, or aspirin 1000 mg 1, 2
- Acetaminophen 1000 mg only if NSAIDs are contraindicated (less effective than NSAIDs) 1
- Alternative: aspirin 250 mg + acetaminophen 250 mg + caffeine 65 mg 2
Moderate to Severe Migraine:
- Combination therapy is superior to monotherapy: sumatriptan 50-100 mg + naproxen 500 mg provides 130 additional patients per 1,000 achieving sustained pain relief at 48 hours compared to sumatriptan alone (NNT = 3.5) 1, 2
- Treat early when pain is still mild: ~50% become pain-free at 2 hours versus ~28% when delayed until moderate/severe pain 1
Second-Line: Alternative Triptans
If initial triptan fails after 2-3 attacks, try a different triptan—failure of one does not predict failure of others 1, 2:
- Rizatriptan 10 mg (fastest oral triptan, peak at 60-90 minutes) 1
- Eletriptan 40 mg or zolmitriptan 2.5-5 mg (more effective with fewer adverse effects than sumatriptan) 1
- Naratriptan (longest half-life, may decrease recurrence) 1
Third-Line: Route Change or CGRP Antagonists
- Subcutaneous sumatriptan 6 mg provides highest efficacy (59% pain-free at 2 hours, onset within 15 minutes) for rapid progression or vomiting 1, 3, 2
- Intranasal sumatriptan 5-20 mg when significant nausea/vomiting present 1, 3, 2
- CGRP antagonists (gepants): ubrogepant 50-100 mg or rimegepant only after triptan-NSAID combination fails 1
Adjunctive Antiemetics
- Metoclopramide 10 mg IV/oral provides direct analgesic effects beyond antiemetic properties; give 20-30 minutes before NSAID for synergistic benefit 1, 3, 2
- Prochlorperazine 10 mg IV comparable efficacy to metoclopramide with fewer side effects 1, 3
Critical Frequency Limitation
Limit all acute migraine medications to no more than 2 days per week (≤10 days per month) to prevent medication-overuse headache, which paradoxically increases headache frequency and can lead to daily headaches. 1, 2
- NSAIDs/acetaminophen: medication-overuse headache develops at ≥15 days/month 2
- Triptans: medication-overuse headache develops at ≥10 days/month 2
- If requiring acute treatment >2 days/week, immediately initiate preventive therapy 1, 2
Preventive Therapy Algorithm
Indications for Preventive Therapy
Initiate preventive therapy when: 1, 4, 5
- ≥2 migraine attacks per month producing disability lasting ≥3 days
- Using acute medication >2 days per week
- Contraindications to or failure of acute treatments
- Severe debilitating headache despite adequate acute treatment
- Patient preference for prevention
First-Line Preventive Medications (Start Here)
The 2025 American College of Physicians guideline prioritizes cost-effective oral agents before expensive CGRP therapies. 1
Choose one based on comorbidities and contraindications:
- Beta-blockers (metoprolol or propranolol 80-240 mg/day): strongest evidence, FDA-approved 1, 4, 5
- Amitriptyline 30-150 mg/day: preferred for comorbid depression, anxiety, sleep disturbances, or mixed migraine/tension-type headache 1, 4, 5
- Valproate/divalproex 500-1500 mg/day: effective but strictly contraindicated in women of childbearing potential due to teratogenic risk 1, 4, 5
- Venlafaxine (SNRI): alternative first-line option 1
Start at low dose, gradually titrate to therapeutic dose, assess efficacy after 2-3 months. 1, 4, 5
Second-Line: Topiramate
Use topiramate only after inadequate response or intolerance to a trial of beta-blocker, valproate, venlafaxine, or amitriptyline because topiramate has higher frequency of adverse events despite similar efficacy 1
Third-Line: CGRP Therapies
CGRP monoclonal antibodies (eptinezumab, erenumab, fremanezumab, galcanezumab) or CGRP antagonist-gepants (atogepant, rimegepant) should be reserved until after failure of first-line oral agents due to substantially higher cost, despite similar net benefits 1
- Assess efficacy after 3-6 months for CGRP antibodies 1
- Patient preference for oral versus injectable formulations influences choice 1
Alternative Options if First-Line Fails
If recommended treatments not tolerated or inadequate response: 1
- ACE inhibitor (lisinopril)
- ARB (candesartan or telmisartan)
- SSRI (fluoxetine)
Lifestyle Modifications
Before initiating pharmacologic prevention, explore modifiable triggers and emphasize lifestyle interventions: 1, 2
- Hydration: maintain adequate fluid intake 1, 2
- Sleep hygiene: regular, adequate sleep (7-9 hours) 1, 2
- Physical activity: regular moderate-to-intense aerobic exercise 2
- Stress management: relaxation techniques, mindfulness, biofeedback 1, 2
- Avoid excessive caffeine (can contribute to medication-overuse headache) 1
True trigger factors are often self-evident; avoid unnecessary avoidance behaviors that damage quality of life. 1
Special Populations & Contraindications
Cardiovascular Disease
- Triptans are absolutely contraindicated in ischemic heart disease, previous MI, coronary vasospasm, uncontrolled hypertension, cerebrovascular disease, stroke/TIA history 1, 3, 2
- Use NSAIDs with caution; consider CGRP antagonists (gepants) as safe alternative (no vasoconstriction) 3
Pregnancy & Lactation
- Discuss adverse effects of pharmacologic treatments during pregnancy/lactation before initiating therapy 1
- Acetaminophen generally preferred for acute treatment 2
- Valproate strictly contraindicated due to teratogenic risk 1
Renal Impairment
Chronic Migraine & Medication-Overuse Headache
Definition & Recognition
- Chronic migraine: ≥15 headache days per month for ≥3 months, with migraine features on ≥8 days 1, 6
- Medication-overuse headache: acute medication use ≥10 days/month (triptans) or ≥15 days/month (NSAIDs/acetaminophen) 1, 2
Management of Medication-Overuse Headache
Abrupt withdrawal of overused medication is preferred (except opioids); explain to patient that headache may temporarily worsen for 2-10 days. 1
- Do not substitute another acute medication during withdrawal 1
- Initiate preventive therapy immediately 1
Preventive Therapy for Chronic Migraine
Evidence-based options: 1
- Topiramate (first choice due to lower cost) 1
- OnabotulinumtoxinA 155-195 U across 31-39 sites every 12 weeks (only FDA-approved therapy specifically for chronic migraine; assess efficacy after 6-9 months) 1, 6
- CGRP monoclonal antibodies (erenumab, fremanezumab, galcanezumab) after failure of ≥2 other preventives 1
Refer patients with chronic migraine to specialist care. 1
Medications to Absolutely Avoid
Never use opioids (hydrocodone, oxycodone, meperidine, hydromorphone) or butalbital-containing compounds for migraine because they have questionable efficacy, lead to dependency, cause rebound headaches, and result in loss of efficacy over time 1, 3, 2, 7
- Reserve opioids only when all other evidence-based treatments are contraindicated, sedation is acceptable, and abuse risk formally assessed 1, 3, 2
- If opioid absolutely necessary, butorphanol nasal spray has better evidence than other opioids 3
Common Pitfalls to Avoid
- Do not allow patients to increase frequency of acute medication use in response to treatment failure—this creates medication-overuse headache; instead transition to preventive therapy 1
- Do not abandon triptan therapy after single failed attempt—try different triptan or route before escalating 1, 2
- Do not delay preventive therapy while trialing multiple acute strategies when headaches occur >2 days/week 1
- Do not use triptans during aura phase—no evidence supports efficacy; wait until headache begins 1
- Do not conflate aggravating factors (worsen headache during attack, e.g., physical activity) with predisposing factors (increase susceptibility, e.g., poor sleep) 1
Headache Diary & Follow-Up
- Use headache diary (paper or smartphone) to track attack frequency, identify triggers, and assess treatment efficacy 1, 2
- Reassess therapy after 2-3 months for preventive medications 1, 4, 5
- Switch preventive medication if inadequate response during reasonable trial period (generally 2-3 months) or earlier if adverse event occurs 1