Table 1 Characteristics

Number of participants

103

Migraine with aura

46 (45%)

Female gender

89 (86%)

Mean age

39.5 (SD 12.8, range 18–78)

Attack frequency/ month, mean

2.7 (SD 1.8, range 1–10)

Migraine years, mean

19.8 (SD 13.3, range 1–60)

Migraine onset age, mean

19.5 (SD 9.9, range 4–57 )

MR imaging Brain normal

103 (100%)

Lifetime prevalence of ETM

38%