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Table 7 Visual Aura Rating Scale (VARS)

From: Hormonal contraceptives and risk of ischemic stroke in women with migraine: a consensus statement from the European Headache Federation (EHF) and the European Society of Contraception and Reproductive Health (ESC)

Visual symptom Risk score
Duration 5–60 min 3
Develops gradually over 5 min 2
Scotoma 2
Zigzag line (fortification) 2
Unilateral (homonymous) 1
Migraine with aura diagnosis ≥5
  1. From Eriksen MK et al. Cephalalgia 2005;25:801–810 [61]