The questionnaire collected the following information: (1) demographics; (2) medical history, including SARS-CoV-2 infection; (3) type and pattern of mask use: surgical masks versus self-filter masks of particles and liquid aerosols (FFP), average number of hours of use per day and use of other protective devices (glasses or screens); (4) frequency and characteristics of pre-existing primary headache (changes in headache frequency, attack duration and frequency, as well as drug use and response); (5) the main variable of the study was personal opinion about the presence of a new headache in the period in which these protective systems were mandatory; (6) presence of other symptoms potentially associated with the use of facial protection equipment; (7) we evaluated the self-perceived impact of the presence of new-onset headache using the Likert scale on social, occupational, family and personal aspects; (8) we also evaluated the self-perceived impact that headache conditions have on the performance of work activities and (9) lastly, we analysed self-perceived work stress by means of the Psychosomatic Problems Questionnaire (PPQ).13