Neck pain and headache in a young or middle-aged patient often feels “benign.” But sometimes, the culprit is carotid artery dissection — an under-recognized cause of stroke, especially in younger adults. For rookies, knowing when to suspect it is crucial to prevent devastating outcomes.
What Is Carotid Dissection?
- Tear in the intimal layer of the carotid artery.
- Blood enters the vessel wall → intramural hematoma → stenosis, occlusion, or thromboembolism.
- Can cause ischemic stroke, TIA, or Horner’s syndrome.
- Often spontaneous, sometimes after minor trauma.
Risk Factors
- Recent neck trauma or manipulation (MVA, chiropractic adjustment, sports injury).
- Connective tissue disease (Marfan, Ehlers-Danlos).
- Hypertension, migraine.
- May occur spontaneously in otherwise healthy patients.
Clinical Clues for Rookies
1. Pain
- Unilateral neck pain or headache (often frontotemporal, periorbital).
- Gradual or sudden onset.
2. Neurological Deficits
- TIA or ischemic stroke, often in young patient without risk factors.
- Hemiparesis, aphasia, visual field cuts.
3. Partial Horner’s Syndrome
- Ptosis + miosis without anhidrosis.
- Classic but often subtle.
4. Other Clues
- Pulsatile tinnitus.
- Transient monocular blindness (amaurosis fugax).
Rookie pearl: Headache + neuro deficit in a young patient = think dissection.
ED Evaluation
- Neuro exam: document deficits carefully.
- Imaging:
- CTA head/neck = first-line in ED.
- MRA as alternative if available.
- Doppler US less sensitive, not reliable to rule out.
- Labs: standard stroke labs (CBC, electrolytes, coagulation).
ED Management
- Stroke pathway: activate code stroke if deficits present.
- Antithrombotic therapy:
- Anticoagulation (heparin, warfarin) or antiplatelet (aspirin, clopidogrel) — both used, choice depends on neurology input.
- Thrombolysis (tPA): Not contraindicated solely for dissection if within window.
- Endovascular therapy: for large vessel occlusion or severe stenosis.
- Admit for monitoring, neurology consult.
Common Rookie Mistakes
- Dismissing unilateral neck pain + neuro symptoms as “migraine” or “tension headache.”
- Forgetting Horner’s syndrome — subtle but diagnostic.
- Ordering only non-contrast CT head (often normal in early dissection).
- Missing recent minor trauma history (even coughing, sports, chiropractic).
- Discharging “young stroke mimics” without vascular imaging.
Rookie Pearls
- Neck pain + neuro deficit = image neck vessels.
- CTA head/neck is the ED test of choice.
- If stroke present, treat per acute stroke guidelines.
- Always admit and involve neurology/stroke team.
Take-Home Message
Carotid dissection is a treatable cause of stroke in young and middle-aged adults. For rookies:
- Suspect it in patients with unilateral headache/neck pain + neuro symptoms.
- Look for Horner’s syndrome.
- Get CTA head/neck early.
- Admit and start antithrombotic therapy with neurology guidance.
Remember: If a young patient has a “stroke,” always think dissection until proven otherwise.
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