What is the appropriate management for a severe headache?

Management of Severe Headache

For severe headache, immediately initiate combination therapy with a triptan plus an NSAID (or acetaminophen if NSAIDs are contraindicated), starting treatment as early as possible after symptom onset to maximize efficacy. 1

Initial Assessment Priorities

Before treating, rapidly evaluate for secondary causes requiring urgent intervention:

• Red flag features: Sudden onset ("thunderclap"), worst headache of life, focal neurologic deficits, papilledema, neck stiffness, immunocompromised state, headache after trauma, personality changes, or worsening with Valsalva maneuver 1, 2
• Neuroimaging indications: Any red flag present, unexplained neurologic findings, or atypical features warrant immediate CT or MRI 1
• If subarachnoid hemorrhage suspected, obtain non-contrast head CT immediately 3

Pharmacologic Treatment Algorithm for Severe Primary Headache

First-Line: Combination Therapy

Start with triptan + NSAID combination immediately 1:

• Triptan options: Sumatriptan (oral 50-100 mg, subcutaneous 6 mg, or intranasal 20 mg), rizatriptan (10 mg), eletriptan (40-80 mg), zolmitriptan (2.5-5 mg), almotriptan (12.5 mg), naratriptan (2.5 mg), or frovatriptan (2.5 mg) 1
• NSAID options: Ibuprofen (400-800 mg), naproxen sodium (550-825 mg), aspirin (650-1000 mg), or ketorolac (60 mg IM for severe cases) 1
• If NSAIDs contraindicated: Use triptan + acetaminophen (1000 mg) 1

Contraindications to triptans: Uncontrolled hypertension, cardiovascular disease, basilar or hemiplegic migraine, recent MAOI use 1, 4

Adjunctive Therapy for Nausea/Vomiting

Add antiemetic for severe nausea or vomiting 1:

• Metoclopramide 10 mg IV/oral 1
• Prochlorperazine 25 mg oral/suppository (maximum 3 doses per 24 hours) 1
• Consider non-oral triptan route (subcutaneous, intranasal) when vomiting present 1

Second-Line Options (If Combination Therapy Fails)

For inadequate response to triptan + NSAID combination 1:

• CGRP antagonists (gepants): Rimegepant (75 mg), ubrogepant (50-100 mg), or zavegepant (intranasal) 1
• Dihydroergotamine (DHE): Intranasal or IV administration 1
• Lasmiditan (5-HT1F agonist): 50-200 mg for patients who fail all other treatments; safe in cardiovascular disease but causes dizziness 1, 4

Rescue Therapy for Refractory Cases

Parenteral ketorolac (60 mg IM) for severe migraine unresponsive to oral agents, with rapid onset and 6-hour duration 1

Corticosteroids (dexamethasone) to reduce headache recurrence, particularly for status migrainosus 1, 5

Critical Contraindications

Absolutely avoid opioids (meperidine, butorphanol) and butalbital-containing compounds 1:

• Lead to medication overuse headache, dependency, and loss of efficacy 1
• Exception: Only consider as last-resort rescue medication when all other treatments contraindicated 1

Medication Overuse Prevention

Limit acute treatment to ≤2 days per week 1:

• NSAIDs: ≤15 days per month 1
• Triptans: ≤10 days per month 1
• If exceeding these thresholds, initiate preventive therapy 1

Route of Administration Considerations

Use non-oral routes when 1:

• Severe nausea or vomiting present
• Rapid onset needed
• Previous oral treatment failures
• Options: Subcutaneous sumatriptan (most rapid), intranasal formulations, IM ketorolac, IV metoclopramide

Special Populations

Pregnancy/breastfeeding: Discuss adverse effects of all pharmacologic treatments; most migraine-specific agents contraindicated 1

Cardiovascular risk factors: Avoid triptans and ergot derivatives; consider lasmiditan or gepants 1, 4

Disposition and Follow-Up

Discharge criteria: Pain improvement achieved, no red flags identified, patient understands medication overuse risks 5

Mandatory referral to headache specialist if 1:

• Frequent episodic migraines requiring preventive therapy
• Inadequate response to acute treatments
• Medication overuse suspected
• Lack of specialist referral results in high ED relapse rates 6

Common Pitfalls to Avoid

• Don't use acetaminophen alone—ineffective for migraine 1
• Don't delay treatment—early administration significantly improves efficacy 1
• Don't start with monotherapy—combination therapy superior for severe headache 1
• Don't overlook cardiovascular contraindications before prescribing triptans 1, 4
• Don't prescribe opioids or butalbital except as absolute last resort 1