RT info:eu-repo/semantics/article T1 Effects of the onabotulinumtoxinA follow-up delay in migraine course during the COVID-19 lockdown A1 González Martínez, Alicia A1 Planchuelo Gómez, Álvaro A1 Guerrero Peral, Angel Luis A1 García Azorín, David A1 Santos Lasaosa, Sonia A1 Navarro Pérez, María Pilar A1 Odriozola González, Paula A1 Irurtia Muñiz, María Jesús A1 Quintas, Sonia A1 Luis García, Rodrigo de A1 Gago Veiga, Ana Beatriz K1 COVID-19 K1 Follow-up K1 Headache K1 Lockdown K1 Migraine K1 OnabotulinumtoxinA K1 SARS-CoV-2 AB Background: Face-to-face procedures have been postponed during COVID-19 pandemic. We aim to evaluate the impact of onabotulinumtoxinA follow-up delay in migraine during COVID-19 pandemic.Methods: Subjective worsening, intensity of migraine attacks, and frequency of headache and migraine were retrospectively compared between patients with unmodified and interrupted onabotulinumtoxinA follow-up in Headache Units.Results: We included 67 patients with chronic migraine or high-frequency episodic migraine under onabotulinumtoxinA treatment, 65 (97.0%) female, 44.5 ± 12.1 years old. Treatment administration was voluntarily delayed in 14 (20.9%) patients and nine (13.4%) were unable to continue follow-up. Patients with uninterrupted follow-up during lockdown presented 7.6 and 8.1 less monthly days with headache (adjusted p = 0.017) and migraine attacks (adjusted p = 0.009) compared to patients whose follow-up was interrupted, respectively.Conclusion: Involuntary delay of onabotulinumtoxinA follow-up in patients with migraine due to COVID-19 pandemic was associated with a higher frequency of headache and migraine attacks. Safe administration of onabotulinumtoxinA during lockdown should be promoted. PB Springer Nature SN 1590-1874 YR 2021 FD 2021 LK https://uvadoc.uva.es/handle/10324/70603 UL https://uvadoc.uva.es/handle/10324/70603 LA eng NO Neurological Sciences, vol. 42, n. 12, p. 5087-5092 DS UVaDOC RD 05-feb-2025