Protocol on Management of Severe Headache
Clinical Guidelines & Emergency Management Pathways
Executive Summary
This protocol provides standardized guidelines for the assessment, investigation, and management of severe headache presentations at Swaraj Hospital & Research Institute. While most acute headaches are primary (benign) in nature, 15-25% of severe presentations indicate serious underlying pathology requiring urgent intervention including subarachnoid hemorrhage, meningitis, acute stroke, or space-occupying lesions.
- Rapid identification of red-flag warning symptoms
- Appropriate use of diagnostic investigations
- Timely specialist referral
- Evidence-based pain management
- Clear admission and discharge criteria
Introduction & Definitions
Definition of Severe Headache
Severe headache is acute cranial pain of significant intensity (≥7/10 on visual analog scale) affecting the head or upper neck region, requiring urgent assessment to identify life-threatening causes and provide appropriate management.
Clinical Significance
- Headache is the 3rd most common ED presentation
- 85-90% are primary headaches (migraine, tension, cluster)
- 10-15% have secondary causes requiring intervention
- Misdiagnosis of dangerous causes leads to poor outcomes
- Early recognition and management reduce morbidity and mortality
Key Principles
- High index of suspicion for dangerous causes
- Rapid assessment minimizes delays
- Appropriate imaging based on red flags
- Clear referral pathways established
Red Flag Symptoms
ANY red flag present requires immediate investigation and likely admission. Do not discharge with reassurance alone.
Additional Risk Factors
- Immunocompromised patients
- Age >50 (increased risk of GCA, stroke)
- History of malignancy
- Pregnancy or postpartum period
- Anticoagulation therapy
- Recent head/neck trauma
- Sudden exertional onset
Initial Assessment & Clinical Evaluation
History Taking Components
Onset & Temporal Pattern
- Sudden vs gradual onset
- Progressive vs stable
- Frequency and duration
- Time of day when worst
Headache Characteristics
- Pain quality: throbbing, pressure, sharp, dull
- Severity: 0-10 scale
- Location: unilateral, bilateral, focal, diffuse
- Radiation pattern
Associated Features
- Fever, chills
- Nausea, vomiting
- Visual symptoms
- Weakness, numbness
- Confusion, behavioral changes
- Neck stiffness
Vital Signs Assessment
- Temperature: Fever suggests infection (meningitis, encephalitis)
- Blood Pressure: Hypertension may indicate emergency (ICH, eclampsia)
- Heart Rate & Rhythm: Tachycardia suggests systemic illness
- Respiratory Rate: Altered breathing suggests CNS involvement
- Oxygen Saturation: Hypoxia requires intervention
Neurological Examination (Minimum Standards)
| Exam Component | What to Assess | Red Flag Finding |
|---|---|---|
| Level of Consciousness | Alert vs lethargic vs confused | Altered LOC or confusion |
| Pupils | Size, symmetry, reactivity to light | Unequal or fixed pupils |
| Visual Fields | Confrontation testing | Visual field defect |
| Motor Strength | Arm drift, leg strength (0-5 scale) | Asymmetric weakness |
| Cerebellar Signs | Gait, balance, coordination | Ataxia or dysmetria |
| Meningeal Signs | Neck stiffness, Kernig, Brudzinski | Any meningeal sign positive |
| Fundoscopy | Look for papilloedema | Papilloedema present |
Diagnostic Investigations
Imaging Selection
CT Brain (Non-contrast)
Timing: Within 30 minutes
Sensitivity: 95%+ for SAH in first 6 hours
Advantages: Fast, readily available, rules out hemorrhage and mass
CT Angiography (CTA)
Sensitivity: Excellent for aneurysm and arterial dissection
Timing: STAT if SAH suspected
MRI with MR Venogram
Advantages: Better tissue resolution, no radiation
Disadvantage: Slower, less accessible acutely
Lumbar Puncture (CSF Analysis)
Timing: Within 60 minutes if bacterial meningitis
IMPORTANT: Perform CT first to rule out contraindications (mass, herniation)
Tests: Cell count, glucose, protein, culture, PCR, Gram stain
Blood Investigations
| Test | Indication | What It Detects |
|---|---|---|
| CBC | Suspected infection | Elevated WBC suggests infection |
| ESR/CRP | Age >50 with headache | Inflammation (GCA, vasculitis) |
| Blood Cultures | Before antibiotics if sepsis | Bacteremia (meningitis) |
| PT/INR | If anticoagulated | Bleeding risk assessment |
| Virology PCR | Meningitis suspected | Viral pathogens |
Investigation Decision Tree
Emergency Management Algorithm
Management of Specific Conditions
Suspected Subarachnoid Hemorrhage (SAH)
- STAT CT, Neurology + Neurosurgery consult
- ICU admission, continuous neuro monitoring
- Nimodipine 60mg IV 4-hourly (vasospasm prevention)
- Target SBP <160, maintain oxygenation
- Avoid hypertension and hypoxia
Suspected Meningitis
- Ceftriaxone 2g IV 12-hourly
- Vancomycin 15-20mg/kg IV 8-12 hourly
- Ampicillin if >50 years or immunocompromised
- Dexamethasone 10mg IV with first antibiotic
- LP after CT to rule out contraindications
- ICU admission
Suspected Acute Stroke
- STAT CT/CTA, Neurology consult
- Activate stroke alert
- Consider thrombolysis if within therapeutic window
- ICU monitoring
Treatment Protocols
Primary Analgesics
Note: First-line, safe in pregnancy, avoid in severe hepatic disease
Contraindications: Renal disease, GI bleed, pregnancy, hemorrhage suspected
Best for: Tension headache, cluster headache prophylaxis
Anti-emetics
Migraine-Specific Therapy
Supportive Care Measures
- ✓ Dark, quiet room (minimizes migraine triggers)
- ✓ Head elevation 30 degrees
- ✓ Oxygen if SpO₂ <94%
- ✓ IV fluids if dehydrated
- ✓ Temperature control if febrile
- ✓ Position changes for comfort
Medications to AVOID
- Opioids: Mask neurological deterioration, risk of dependence
- NSAIDs: Suspected hemorrhage (SAH, ICH, anticoagulated patient)
- Excess Analgesics: Risk of medication overuse headache (>10 days/month)
Admission, Discharge & Referral
- Any red flag symptom present
- First/worst headache of life
- Progressive or unrelenting pain
- Fever + meningeal signs
- Focal neurological deficit
- Altered consciousness
- Abnormal imaging findings
- Failed outpatient management
- Complete neuro exam normal
- No red flag symptoms
- Imaging normal (if done)
- Pain controlled/improving
- Reliable patient with support
- Clear follow-up arranged
- Return precautions explained
- Suspected SAH/ICH/stroke
- Space-occupying lesion
- Recurrent/chronic headache
- Migraine requiring prophylaxis
- Atypical features
- Undiagnosed after workup
Return Precautions for Discharged Patients
- Headache progressively worsens
- New weakness, numbness, or difficulty speaking
- Vision changes or eye pain
- Neck stiffness or fever develops
- Confusion or altered consciousness
- Seizures occur
- Headache different in character from usual
Documentation Requirements
| Element | What to Document |
|---|---|
| Vital Signs | Temperature, BP, HR, RR, SpO₂ with time recorded |
| Pain Severity | 0-10 scale, location, character, onset |
| Red Flag Assessment | Specific findings or explicitly "no red flags identified" |
| Neurological Exam | LOC, pupils, motor, cerebellar signs, meningeal signs |
| Imaging | Type, findings, time completed |
| Medications | Drug, dose, route, time, response |
| Final Diagnosis | Primary vs secondary, specific type |
| Disposition | Admitted to (ward/ICU), discharged, or referred |
References & Guidelines
- Hainer BL, Matheson EM. Approach to acute headache in adults. Am Fam Physician. 2013;87(10):682-687.
- Indian Council of Medical Research (ICMR). Standard Treatment Workflow for Management of Headache. Department of Health Research, Ministry of Health and Family Welfare, Government of India. 2024.
- South Eastern Sydney Local Health District. Assessment and Management of Headaches in Adults within SESLHD Emergency Departments. SESLHDGL/060. January 2025.
- Edvardsson B, Edvinsson L. Principles in evaluation of headache. Neurol Clin. 2019;37(4):745-760.
- Orr SL, et al. 2025 Guideline Update to Acute Treatment of Migraine for Adults in the Emergency Department. American Headache Society. 2025.
- International Headache Society. International Classification of Headache Disorders (ICHD-3). 3rd ed. 2024.

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