Migraine

Neurology

Recurrent primary headache disorder with moderate-severe unilateral throbbing pain, nausea and sensory sensitivity, with or without aura.

Clinical features

  • Unilateral pulsating headache 4–72 h
  • Photophobia, phonophobia
  • Nausea/vomiting
  • Visual aura (fortification spectra) in 25%

Investigations

  • Clinical diagnosis (ICHD-3)
  • Neuroimaging only if red flags — thunderclap, focal deficit, new headache >50 y, immunosuppression

Differential diagnosis

  • Tension-type headache
  • Cluster headache
  • Medication-overuse headache
  • SAH
  • Idiopathic intracranial hypertension

Management

  • Acute: aspirin 900 mg or naproxen 500 mg + antiemetic
  • Triptan (sumatriptan 50–100 mg) if NSAID inadequate
  • Prophylaxis if ≥4 headache days/month: propranolol, topiramate, amitriptyline, candesartan
  • CGRP monoclonal antibody if ≥3 preventives failed

Clinical pearls

  • Limit acute drugs to <10 days/month to avoid medication-overuse headache
  • Avoid triptans in ischaemic heart disease and hemiplegic migraine
  • Combined oral contraceptive contraindicated in migraine with aura

Related in WardRound

Educational — verify locally.

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