Fig. 3From: New daily persistent headache after SARS-CoV-2 infection in Latin America: a cross-sectional studyConcomitant symptoms of persistent headache after COVID-19 of 421 participants in Latin America. Data are plotted as percentage. ap < 0.05; bp < 0.01; cp < 0.001 (p values by Pearson’s chi-square test). SF/F: sweating of the face or forehead; DUE/PC: drooping of the upper eyelid and/or pupillary constrictionBack to article page