Correction to: J Headache Pain 22, 141 (2021)

https://doi.org/10.1186/s10194-021-01351-2

Following the publication of the original article [1], we were notified that the x-axis labels for part B of Figure 1 were incorrect in the previous version and had accidentally been duplicated from part A.

Originally published Figure 1:

figure a

Corrected Figures:

figure b

The original article has been corrected.