Correction to: J Headache Pain 21, 87 (2020)

https://doi.org/10.1186/s10194-020-01152-z

After publication of the original article [1], we were notified of a mistake in the article title. The authors have found that mice knockdown/ or knockout of NPFFR2 showed no responses to capsaicin injection, which up-regulated the CGRP protein in the trigeminal ganglion. Therefore, the word “knockdown” should be added into the title to correctly represent the paper’s major findings.

The correct title should read:

“The knockdown of Neuropeptide FF receptor 2 inhibits capsaicin-induced CGRP Upregulation in mouse trigeminal ganglion”.